JPS619026A - Amateur radio communication equipment - Google Patents

Abstract

PURPOSE:To bring automatically an idle channel into a talking channel by providing the 1st and 2nd storage means storing respectively an oscillated frequency data at call and a frequency data and the 1st and 2nd group code storage means storing a group code to be transmitted and a group code to be selected. CONSTITUTION:The group code in a received input data is compared with the stored group code stored in a group code storage means 23 by a group code comparison means 24 and when they are not coincident, the group code is compared with the stored group code in a group code storage means 28 and the coincidence is detected. When the coincidence is detected, the group code comparison means 24 is switched, a frequency data in the input data in the reception signal is selected and fed to a storage menas 20. A selection means 21 in this case selects a storage frequency data of the storage means 20 and a frequency synthesizer 5 is set to a frequency corresponding to the frequency data in the input data of the reception signal. Thus, the amateur radio communication equipment is locked automatically to an idle channel.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an amateur radio communication device that automatically connects communication channels.

(Prior Art) Conventional amateur radio communication devices are configured to manually set a communication channel with a communication partner.

For this reason, when using conventional amateur radio communication equipment, it is not possible to search for an empty communication channel (hereinafter referred to as an empty channel) and automatically connect the communication channel.

(Objective of the Invention) The present invention has been made in view of the above, and an object of the present invention is to provide an amateur wireless communication device that can automatically set an empty channel to a communication channel.

(Configuration of the Invention) FIG. 1 is a functional block diagram showing the configuration of the present invention.

Reference numeral 1 denotes a communication device main body, which includes a transmitting section 2, a receiving section 3, an antenna switching section 4, a frequency synthesizer section 5, and a transmitting/receiving section that selectively supplies power to the transmitting section 2 and receiving section 3 to switch between transmission and reception. a switching means 6, an audio signal amplifier 8 that amplifies the output of the microphone 7, and a modulation signal switching means 10 that switches between the output of the audio signal amplifier 8 and the output of an output data generation means 9, which will be described later, and supplies it as a modulated signal to the transmitter 2. , and an audio signal amplifier 11 that receives and amplifies the audio signal from the receiver 3, and the transmitter 2 modulates the oscillation output of the frequency synthesizer 5 using the output of the modulation signal switching means 10 as a modulation signal. It is configured to transmit, and to receive by converting the received signal frequency into an intermediate frequency by converting the output of the frequency synthesizer 5 into a local oscillator output. Note that 12 represents an antenna, and 13 represents a speaker.

Microphone 7 has a push-to-talk (, pus)
h to talk, abbreviated as PTT) switch 14 is installed, and the PTT switch 14 is turned on.
The transmitting/receiving switching means 6 is configured to be switched from the receiving side to the transmitting side by &-. Further, the antenna switching section 4 is configured to switch in conjunction with the transmission/reception switching means 6.

automatic channel selection device [115, call instruction means 16;
- ゛ & call instruction means 1
6, and storage means 20 for storing frequency data. The frequency data of the empty channel found by the empty channel searching means 17 is supplied to the selecting means 25, and when an empty channel is detected, the selecting means 25 is connected to the frequency data of the empty channel outputted from the empty channel searching means 17. Then, the transmission/reception switching means 6 is switched from the reception side to the transmission side and the modulation signal switching means 10 is switched from the audio signal amplifier 8 side to the output side of the output data generation means 9 for a predetermined period of time, and when this predetermined period has elapsed, the selection means 21 is switched. Then, frequency data stored in the storage means 2o is supplied to the frequency synthesizer 5 instead of frequency data stored in the storage means 22 (to be described later). The output of the selection means 25 is also supplied to the storage means 2°.

The automatic channel selection device [115] further includes group code storage means 23 for storing the group code to be transmitted, group code storage means 26 for storing the group code to be selected, and storage of the group code storage means 26. A selection means 27 for selecting a predetermined group code from among the group codes, and a group code &! for storing the group code selected by the selection means 27. A storage means 28, an output data generation means 9 for generating corresponding output data by combining the group code stored in the group code storage means 23 and the frequency code stored in the storage means 2o, corresponding to the oscillation frequency at the time of calling. The storage means 22 stores the frequency data stored in memory, the group code of the group code storage means 23, or the &! of the group code storage means 28. a group code comparing means 24 for detecting a match between the memory group code and the group code in the input data received by the receiving section 3;
The frequency data in the input data is supplied to the selection means 25. Based on the coincidence detection output of the group code comparison means 24, the selection means 25 selects frequency data from the input data and supplies it to the storage means 20.

(Description of the Invention) In the amateur radio communication device of the present invention configured as described above, the storage means 22 stores frequency data corresponding to the oscillation frequency at the time of making a call, which has been arranged in advance with the communication partner, and stores the group code. The means 23 is made to store a group code for transmission that has been arranged in advance with the communication partner, the group code storage means 26 is made to store a group code for standby, and the selection means 27 selects the group code stored in the group code storage means 26. Select the group code for carrying from among the selection means a
The group code selected in step 27 is stored in group code storage means 28.
Let me remember it.

Further, the oscillation frequency of the frequency synthesizer 5 is determined by the selection means 21.
It is set by the storage frequency data of the storage means 22' or 20 supplied via the storage means 22' or 20. That is, the frequency division ratio of the variable frequency divider of the frequency synthesizer 5 is set according to the stored frequency data of the storage means 22 or 20 supplied via the selection means 21.

On the other hand, the transmission/reception switching means 6 is normally switched to the reception side, and receives radio waves at a set reception frequency determined by the oscillation frequency of the frequency synthesizer 5.

When the call instruction means 16 receives a call instruction, the empty channel search means 17 which receives the call instruction signal searches for an empty channel. When an empty channel is found by the empty channel search means 17, the frequency data of the empty channel is stored in the storage means 20 via the selection means 25.

−”・lIy″’ −1′&! Wit f″1R23
Ni:Eilt! 'u&6.

The group code and the storage frequency data of the storage means 20 transferred to the storage means 20 in the above manner are the output data generation means 9.
The output data is generated by performing predetermined data processing.

On the other hand, when the empty channel searching means 17 detects an empty channel, it generates an output at least until the end of transmitting the output data to the modulation signal switching means 10 and the transmission/reception switching means 6. The modulated signal switching means 10 receiving this output is switched from the output selection side of the audio signal amplifier 8 to the output selection side of the output data generation means 9, and the transmission/reception switching means 6
is switched from the receiving side to the sending side. Also, selection means 21
selects the frequency data stored in the storage means 22 and applies it to the frequency synthesizer 5.

Therefore, the modulated signal supplied to the transmitter 2 is the output data generated by the output data generating means 9, and the frequency data in the output data is the frequency data stored in the storage means 20, that is, the frequency data of an empty channel. Transmitter 2
The carrier frequency of the modulated wave transmitted from the storage means 22
This is the frequency corresponding to the stored frequency data, and this carrier wave is modulated by the output data and transmitted.

When the transmission of the output data is completed after a predetermined period of time has elapsed, the empty channel search means 17 outputs a switching signal for switching the selection means 21, and at the same time outputs the signal outputted to the transmission/reception switching means 6 and the modulation signal switching means 10. Extinguish.

Therefore, the selection means 21 selects the frequency data stored in the storage means 20 instead of the frequency data stored in the storage means 22 and supplies it to the frequency synthesizer 5. Further, the modulation signal switching means 10 is switched to the output side of the audio signal amplifier 8, and the transmission/reception switching means 6 is switched to the receiving side. As a result, the frequency synthesizer 5 is set to a frequency corresponding to the frequency data of the empty channel, and the amateur radio communication device enters a state of waiting for radio waves of the frequency of the empty channel to be transmitted.

Next, the operation of receiving a call from another amateur radio communication device and drawing it into a designated empty channel will be explained.

The group code in the received input data is determined by the group code comparison means 2.
At step 4, the code is compared with the memory group code stored in the group code storage means 23, and if there is no -1 match, it is compared with the memory group code stored in the group code storage means 28 to detect a match.

When a match is detected, the group code comparison means 24 is switched to select frequency data in the input data of the received signal and supply it to the storage means 20. At this time, the selection means 21 selects the frequency data stored in the storage means 20, and the frequency synthesizer 5 is set to a frequency corresponding to the frequency data in the input data of the received signal. As a result, the amateur radio communication device is automatically drawn into an empty channel. ' In this case, the group codes stored in the group code storage means 28 other than the group codes stored in the group code storage means 23 are also carried.

Also, by pressing the PTT switch 14,
Then, the transmission/reception switching means 6 is switched to the transmission side and transmission is performed, and by stopping the suppression of the PTT switch 14, the transmission/reception switching means 6 is switched to the reception side, and communication is performed at the frequency of the above-mentioned empty channel. will be done.

(Example of the invention) Next, the present invention will be specifically explained with reference to Examples.

FIG. 2 is a block diagram showing one embodiment of the present invention.

The transmitter 2A includes an audio signal amplifier 8 that amplifies the output of the microphone 7, an output of the audio signal amplifier 8, and a modem 4, which will be described later.
a modulation signal switching means 10 which inputs the output data modulated by the modulation signal switching means 10, and a modulator 31 which modulates the oscillation output of the frequency synthesizer 5 by using the output of the modulation signal switching means 10 as a modulation signal.
, a high frequency amplifier 32 that amplifies the output of the modulator 31, and an antenna switching unit 4 that amplifies the power of the output of the high frequency amplifier 52.
A high frequency power amplifier 33 that supplies antenna 12 via
It transmits the angle signal from the microphone 7 or the output from the modem 41.

The receiving section 3A is supplied via the antenna switching section 4.
□・High frequency amplifier 3 that receives and amplifies the modulated wave
4. Oscillation output of frequency synthesizer 5 and high frequency amplifier 3
mixer 3 which mixes the output of 4 and converts it into an intermediate frequency signal;
5. An intermediate frequency amplifier 36 that amplifies the output of the mixer 35, that is, an intermediate frequency signal; a demodulator 37 that demodulates the output of the intermediate frequency amplifier 36; a mini-120 mute means 120 that mutes the output of the demodulator 37; an audio signal amplifier 11 that amplifies the audio signal output through the audio signal to drive the speaker 13, and a comparator that receives the demodulated output and detects whether it is below a predetermined level to detect whether the channel is empty. 39, and the output of the demodulator 37 is supplied to the modem 41.

On the other hand, 80 is a microcomputer, which basically consists of a CPt 181, a ROM 82, a RAM 83, an input port 84, an output port 85, and a timer 86.

Further, 101 is a code selection means consisting of a switch for selecting a call sign code setting instruction, a setting code A setting instruction, and a setting code B setting instruction, and 102 is a code setting means consisting of a numeric keypad switch for setting a call sign and a setting code. , 115 is a group code selection means comprising a switch and selecting a setting code to switch between standby and use;
Reference numeral 118 indicates a system operation status setting means comprising a switch and designating whether to automatically connect the communication device to the other party's communication device; 119 indicates a call setting means comprising a switch for instructing a call to be made; 124 indicates 〇 - Frequency data setting means that sets frequency data using a tarry encoder and an up/down counter, and the output is frequency data storage area 1, which will be described later.
It is set to 22.

Numeral 161 is a frequency data selection and setting means for instructing what the set frequency data corresponds to, and it is specified whether the frequency data corresponds to the start channel frequency or f1 to f5. Reference numeral 129 is a switch, and priority selection state setting means specifies that predetermined frequency data should be preferentially selected as an empty channel when searching for an empty channel. Reference numeral 134 is a switch, which is opposite to the priority selection state setting means 129. 1.39 is a reset switch; 148 is a means for replacing the start channel round number with the empty channel frequency; 1.39 is a reset switch; Reverse setting means 150 for instructing is a code squelch setting means for instructing to automatically cancel the squelch by using the group code as the squelch code.

750 grams for controlling the CPU 81 is written in the ROM 82, and the code selection means 1 is written in the input port 84.
01 output, code setter &2102 output, group code selection means 115 output, system operating state setting means 11
8, output of call setting means 119, output of frequency data setting means 124, frequency data selection setting means 161
, the output of the priority selection state setting means 129, the output of the selection exclusion state setting means 134, the output of the reset switch 139, the output of the reverse setting means 148, the output of the code squelch setting means 150, the PTT switch +
14, the demodulated output data of the modem 41 converted by the serial/parallel converter 42, and the output of the comparator 39 are supplied. The CPLI 81 reads signals and data supplied to the input port 84 according to the program stored in the ROM 82 when necessary, and stores them in the RAM 83.
1. : It stores, performs calculations, comparisons, and data processing, and also determines whether the input state continues for the time set by the timer 86, and outputs data via the output port 85 according to the calculation, comparison, processing, and determination results. Display 112, Call Lee In Display 114, Empty 1 Synnel Search Display 126, (jjJ@Connection Display 146, Courtes't
) Lt 5-Display signal to display 151, frequency data (frequency division ratio) to frequency synthesizer 5, switching signal to transmission/reception switching means 6, switching signal to modulation signal switching means 10, parallel/serial converter 40 The output data is outputted to the modem 41 and the mute control signal is outputted to the muting means 120 with or without latching as necessary.

In this embodiment configured as described above, for example, 144
MHz band (144,520MHz ~ 145.730M
Hz) and send and receive channel 20.
MHz step. In this case, the number of channels is 64
Become a channel.

Note that FIG. 3 further shows the block diagram shown in FIG. 2 as a functional block diagram.

Hereinafter, the operation of one embodiment of the present invention will be explained according to the diagrams shown in FIGS. 4 to 6 together with FIG. 3.

First, when the amateur radio communication device of the present invention is operated, it enters a receiving state unless a special operation is performed.

When the program is started, the code selection means 101 detects whether setting a call sign code has been selected (step a1). The code selection means 101 can specify setting of a call sign code, setting codes A and B, and is controlled to the setting code by a signal from the microcomputer 80 when a call sign code setting instruction is given as described later. It is possible to configure it. Further, the setting codes A and B are referred to as setting codes in order to function as so-called group codes and code squelch codes, and will be referred to as group codes A and 13 below.

In addition, the call sign code etc. can be set using code setting means 1.
Set by 02. For this reason, for example, when the code setting means 102 is pressed four times, one character of the ASCII code is specified, and when the code setting means 102 is pressed the first two times, the code setting means 102 is pressed four times.
The code setting means 102 that has been pressed the next two times adds the values indicated by 2 to obtain the hexadecimal numbers corresponding to the top three hits of the 7 unit ASCII code, and adds the accepted values to the lower 4 bits of the 7 unit ASCII code. The hexadecimal numbers corresponding to are shown respectively.

Swap a! When setting a call sign code is selected in , a second count area (hereinafter referred to as a counter) 104 provided in the RAM 83 for setting the number of digits of the call sign is cleared. (Step a2) Then, the first counter 103 provided in the RAM 83 is cleared in order to count the number of presses of the code setting means 102 to correspond to one character of the ASCII code (Step aa).

The key switch output supplied from the input code setting means 102 is converted into an ASCII code by the above-mentioned 2.
The call sign code is loaded into the call sign code calculation means 106 which adds the pressed values (step a4), and then the first
The counter of is set to "' + 1" (step aS
). Steps 84 to a5 are repeated a number of times corresponding to one ASCII code character (step a6). The input code is then converted to ASCII code (step a7),
The converted ASCII code is stored in the call sign code storage area 107 provided in the RAM 83, and the stored contents are displayed on the call sign display 114 via the sign calculation means 113 (step as''). '+1' is added to the counter 104 (step ag).
, steps a3 to a9 are repeated a number of times corresponding to the digits of -1-Rusine (step up axe). step ate
When the count value of the counter 104 reaches a value corresponding to the number of digits of the call sign, the call sign code is completely stored in the call sign code storage area 167, and the call sign code is stored in the RAM 83. f,
14 call sign code setting status storage area 108
A flag is set (step aZt). Then, the call sign code selection of the code selection means 101 is canceled and the position where the group code A is set is selected (
Step a12).

Following step a12, it is detected in the code selection means 101 whether setting a group code has been selected (step a13).

In this embodiment, the group code is group code (A).

Although the example shown in (B) is a case where two group codes can be set, it is not necessary to limit the setting to two group codes.

If it is selected in step a1 to select a call sign code and there is no call sign code, step a13 is executed following step a1.

In step a13, if it is selected to set the group code, the block ""1°-t" is set in the RAM 83.
”7) Ii * 'e: !tt @ t 61743
(7) "S') 105 is cleared (step at+), and it is detected whether the selected group code is group code (A) (step a15). In step als, group code (A) is selected. When it is detected that the input code is
° is loaded into the group code storage area 109 (step aIS), and the third counter 105 is 11'+I I
+ (step at7) and the set group code (A)
is displayed on the data display 11 via the data display selection means 111.
2 (step a1e). Following step alB, steps a16 to al[l are repeated until the count value of the third counter 105 reaches the number of digits of the group code, and the count value of the third counter 105 reaches the number of digits of the group code. When it is reached (step aIS), step alB is executed next. Therefore, the first group code memory 1 rear 10
The group code (A) set to 9 is stored.

If the group code selected in step a15 is not group code (A), it is group code (B), and in this case, following step at's, steps a16 to a
Steps a2 (1 to a23) similar to Sg are executed 6 degrees. As a result, the group code (B) set in the second group code storage area 110 provided in the RAM 83 is stored.

In step all, if it is not selected to set a group code, it is detected whether the group code selection means 115 has selected the group code (A) to be used for standby (step a24). ). When the group code (A) is selected by the group code selection means 115, the group code ('A) is stored in the first group code storage area 10.
9 is stored (step a25).
.

In step a25, the first group code storage area 10
9 is stored in RAM 8.
[Group provided in 3]-do (A) Selection permission storage area 1
16 (step a; Z;), and the set BY code (A) is displayed on the data display 112 together with a specific display such as a decimal point (step a27).

Next, it is detected whether the group code (B) has been selected by the group code selection means 115 for use (test a28).

If the group code (A) is not selected in step a24, and if the group code (A) is not set in step a25, step a24. Step 82B is executed following a25.

When the group code (B) is selected in Step A and Day 2, it is detected whether the group code (B) is stored in the second group code storage area 110 in the same way as in step a2s ( Step 82S).

In step ag9, the second group code storage area 11
When the group code (B) is stored in 0, RAM83
Group code (B) selection permission storage area 11 provided within
A flag is set at 7 (step a: io), and the set group code (B) is displayed on the data display 112 with a specific display such as a decimal point (step a31). It will also be apparent from steps 924-aaO that both group codes (A) and (B) can be left selected.

Following step aat, a calling routine is executed. Further, when the group code (B) is not selected in step 82B, the group code (B) is selected in step 82B.
) is not set, the calling routine is executed following steps 828 and 829.

As is clear from the above, the call nine code, group codes (A), and (B) can be set. Also, group code (A)
, (B) is set and memorized even if it is set and stored.
If it is not selected in 4.82g, the standby is not used for any purpose.

Next, the calling routine will be explained with reference to FIG.

In the calling routine, it is detected whether the system operating state setting means 118, which specifies whether to automatically connect the communication device to the other party's communication device, is set (step b).
1). In step b1, if the system operating state setting means 118 is not set, the calling routine is skipped and the sending and receiving routines described later are executed. In step b1, the system operating state setting means 11
8 is set, immediately following step b, it is detected whether the call setting means 119 is set (step b2). If the call setting means 119 has not set it in step b2, the call routine is skipped and the transmission/reception routine is executed. When the call setting means 119 is set in step b2, it is detected whether call nine is set following step b2 (step b3).

Whether a call sign is set is detected by whether a flag is set in the call sign setting state storage area 108. In step b3, if a call sign is not set, the calling routine is skipped and the transmitting/receiving routine is executed.

If a call sign is not set due to urgency, the caller will not be able to make a call and will not be linked to the other party.

When the call sign is set in step b3, following step b3, the mute means 120 is set to an operating state, that is, a mute-on state (steps t)s). Since muting is applied in step b4, the receiver is in a receiving state while searching for an empty line, but the audio is muted. Following step b3, it is detected whether the line is connected or not (step b
s).

Detection of whether a line is connected or not is performed by checking whether a flag is set in a line connection storage area 121 provided in the RAM 83. When the line is connected in step b5, the state of re-calling, which will be described later, is entered, and this means that the calling routine is repeated at least once.
There may be cases where the condition is reached by repeating the rotation.

In step b5, when the line is not connected, certain frequency data is stored in the frequency data storage area 122 set in the RAM 83.
Start channel data storage area provided in AM83 (hereinafter referred to as S channel data storage area)
123 (ste, tsubu bs). In addition, in the frequency data storage area 122 here, the frequency data negotiated with the other party to communicate before step b6 is set by the frequency data setting means 124 consisting of a rotary encoder etc., and this setting data is The frequency data is stored in the storage area 122.

Continuing from step b6, the holding state is prohibited (step b7). The prohibition of the receiving/carrying status is performed by resetting the flag in the receiving/carrying status storage area 125 provided in the RAM 83. Following step b7, the empty channel search indicator 126 is lit to indicate that empty channel 1 is being searched (step ba). Note that in addition to the display of empty channels using line light, an audio display (for example, a beep sound) may be performed.

Also, f! provided in the RAM 83! data storage area 127 and f2 data storage area, 12
For example, (t, +
It is detected whether the priority selection state setting means 129 is set to preferentially select V.2 as the voice communication channel (step bs). When the priority selection state is set in step b9, frequency data j1 is loaded into the frequency data storage area 122 (step blo);
frl' lfl /J' of the first timer 130 is started (step brt). Here frequency synthesizer 5
The output frequency is set by the frequency data stored in the frequency data storage area 122. Therefore, the receiving frequency (when receiving) and the transmitting frequency (when transmitting) are set. Step b! Following H.
ft loaded in the frequency data storage area 122
Empty channel detection means 13 comprising a comparator 39 determines whether the received signal of the frequency corresponding to the frequency data is below a predetermined level.
2 (step b12), and it is detected whether the received signal level continues to be below a predetermined level for the set time of the first timer 130 (step 2 b13).
・Step b13
ft when the received signal level at 12 continues to be below a predetermined level for the set time of the first timer 130.
It is determined that the frequency corresponding to the frequency data is an idle line, and step b27, which will be described later, is executed.

Further, the first timer 1 indicates that the received signal level exceeds a predetermined level in step b12, or that the received signal level is below a predetermined level in step b13.
If the frequency data f2 does not continue for the set time of 30, then in step b12, the frequency data f2 is stored in the frequency data storage area 12.
2 (step b1+), and the first timer 13
0 time measurement is started (step b>.step b
Following ls, it is detected whether the received signal of the frequency corresponding to the 12 frequency data loaded in the frequency data storage area 122 is below a predetermined level (step bxs),
It is detected whether the received signal level continues to be below a predetermined level for the set time of the first timer 130' (
Step b1)). In step b17, step b
If the received signal level in 16 continues to be below the predetermined level for the set time of the first timer, it is determined that the frequency corresponding to the 12 frequency data is an idle line, and Stellar b27, which will be described later, is executed. Further, if the received signal level exceeds the predetermined level in step b16, or if the received signal level does not continue to be below the predetermined level in step b17 for the time set by the first timer 130, random frequency generation is performed in step b16. The frequency data generated by the means 133 is loaded into the frequency data storage area 122 (step bts).
Then, the frequency data stored in the frequency data storage area 122 is increased (step b19).

When the priority selection state setting means 129 is not set in step b9, step b18 is executed subsequent to step b9. In this case, the frequency data that should be prioritized is not selected.

Step 1) Following 19, f3 provided in RAM83
Frequency data set in advance in the data storage area (not shown) and the f4 data storage area (not shown), for example, f3. It is detected whether the selection/exclusion state setting means 134 that prohibits selection of J4 as a communication channel is set (step b20). step b20
When the selection/exclusion state is set in , the frequency data comparison means 138 detects whether the frequency data stored in the frequency data storage area 122 matches the frequency data f3 (step b21).
. In step b21, the frequency data storage area 12
If the frequency data stored in No. 2 is not the frequency data f3, then it is similarly detected whether it matches the frequency data f4 (step b22). step b2
If the frequency data stored in the frequency data storage area 122 is not the frequency data f4 in step b22, the frequency that does not correspond to the frequency data stored in the frequency data storage area 122 is stored in the RAM 83. It is detected whether the frequency is within the amateur band to be stored in the set range frequency data storage area 135 (step b23).
). When step -23 is executed via steps b2i to b22, the frequency data stored in the frequency data storage area 122 in step b19 does not correspond to the frequency to be selectively excluded.

If the selection/exclusion state setting means 134 is not set in step b20, step b23 is executed following step b20. . In this case, it is not determined whether the frequency data should be selectively excluded.

In step b23, the frequency data storage area 122
When the frequency corresponding to the frequency data stored in is within the 7-major band, the first timer
0 timing is started (step b24), then it is detected whether the received signal level is below a predetermined level (step b2s), and the setting of the first timer 130 determines that the received signal level is below the predetermined level. It is detected whether the continuation is continued. . Yuga, a5,6.
oh. 1, 'When the first timer 130 is set auia that the received signal level is below a predetermined level, the frequency data storage area 122 is set in step b19.
This means that the frequency corresponding to the frequency data stored in is an idle line. Further, following step b26, the frequency data stored in the rear 122 is loaded into the empty channel data storage area 136 provided in the RAM 83 (step b27).

Following step b27, the frequency data stored in the rear 123 is loaded into the frequency data storage area 122 (step b2).

Here, when step b2[1 is executed through step b13 or step b17, it is the frequency data f1 or f2 that is stored in the empty channel data storage area 136, and step b28 is executed through steps b20 to b27. In this case, the frequency data stored in the empty channel data storage area 136 is never the frequency data f3° f4. Further, when step b28 is executed through step b5, the line connection is established.E again in step b28, the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage area 122. This means a re-call.

Following step b20, frequency data storage area 122
It is detected whether the received signal level of the frequency corresponding to the frequency data loaded into the
9), PTT switch 1 when it exceeds the predetermined level.
4 is in the on state (step bio). When the PTT switch 14 is in the on state in step b3[1, and the received signal level is below a predetermined level in step b29, it is assumed that the search for an empty line has ended, and the empty channel surge indicator 126 is turned off (step b+t). ). Here, when step b31 is executed via step t)30, the received signal level is above a predetermined value, but the call is forced to be made. Note that the reason why it is detected in step b29 whether the received signal level is below a predetermined level is to confirm at this point whether the start channel is an idle line.

Steps b21', b22. When the frequency data stored in the frequency data storage area 122 matches the frequency data f3 in b23, the frequency data f4
If the signal corresponds to a frequency outside the amateur near band, and the received signal level exceeds the predetermined level in step b2s, step b
21゜b22, b23, b25 followed by PTT
It is detected whether the switch 14 is on (step b32).
), when the PTT switch 14 is not in the on state, it is detected whether the reset switch 139 is in the on state (step b93). In step b33, reset switch 1
39 is in the off state, step b111 is executed following step b33.

When the PTT switch 14 is in the ON state in step I):12 and the reset switch 139 is in the OFF state in step b33, it is a case that an instruction is given to stop the call, and in step b32. Following b33, the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage 1 area 122 (step b34), and step b51, which will be described later, is performed.
is executed. If the PTT switch 14 is not in the on state in step t)Ill, it is detected whether the reset switch 139 is in the on state after step b30 (step bas), and if the reset switch 139 is not in the on state, step b29 is executed in step b35. be done. At step b3s, switch 1 is
39 is in the on state, this means that an instruction is given to stop the call, and a step bit to be described later is executed following step b35.

Following step b'31, the frequency data stored in the empty channel data storage area 136 is 1
The group code (A>) is loaded into the output data encoding means 141 (step bis) and then selected by the code selection means 101.
Further, the call sign data stored in the call sign code storage area 107 is loaded into the output data encoding means 141 (step b38). Then, the output data encoding means 141 encodes the 0-coded data into, for example, a Hagelberger code (step b3).
9). Therefore, in step b37, the call sign data, group code and empty channel frequency data are encoded.

Following step ba9, the transmitting section 2 is set to a data transmitting state, that is, the output obtained by converting the output of the output encoding means 141 by the parallel/serial converting means 40 is guided to the transmitting section (step bso), and the communication device is switched to the transmitting/receiving switching means 6. is set to a transmitting state (step bat), and then the synchronization data generated by the synchronization data generator 144 is transmitted (step b42). Following step b42, the output data encoded in step b3G is subsequently transmitted (step b43). Therefore, by executing step b43, a so-called call is made in which the frequency corresponding to the S channel frequency data is modulated with the data including the empty channel frequency data and transmitted.

Following step b43, the transmission state is canceled and the transmission/reception switching means 6 is returned to the reception state (step tz+), and furthermore, the data transmission state is canceled (step b45), and the data is stored in the empty channel data storage area 136. The current frequency data is loaded into the frequency data storage area 122 (step b46). Therefore, the communication device is now set to the searched empty channel receiving frequency and is set to receive and receive transmissions from the other party. Following step b46, the frequency corresponding to the frequency data stored in the empty channel data storage area 136 is displayed on the data display 112 (step b47).

Following step b47, a flag is set in the line connection storage area 121 (step b4B).

In step b48, it is assumed that the transmitting side has unilaterally established a line connection with the receiving side.

Following step b48, the line connection indicator 146 is lit (step bus). Following step b4g, the third timer 147 starts counting (step b5
@). The set time of the third timer 147 is set to a time when no line connection is established if there is no input from the other party within this set time.

Following step bso, reverse state setting means 148
A flag in the reverse state storage area 149 provided in the RAM 83 is reset to store the output state of the reverse state (step b51). The reverse state storage area 149 indicates whether the frequency data stored in the frequency data storage area 122 is frequency data corresponding to an empty channel or frequency data corresponding to an S channel.

Following step bst, the carrier is in the state storage area 12.
The flag of No. 5 is set to 1~, the prohibition of the hold-and-receive state is canceled (step b52), and it is then detected whether the code squelch is set by the code squelch setting means 150 (step bs3). If the code squelch is not set in step b53, the muting by the muting means 120 is canceled in step bs3 (step bs+), and the transmission/reception routine is executed. In this state, the frequency corresponding to the empty channel frequency data can be received.

Once the code squelch has been set in step bs3, the code squelch indicator 151 is turned on in step b53 (step b56), and then the transmission/reception routine is executed. - In this state, reception is not possible because the muted state is maintained.

Also, when step bs1 is executed after step b34 and step b35, the '1.27''
This shows a state in which steps fb26 to b50 and steps b31 to bs are skipped, and the search for an empty channel is forcibly canceled and the call is forcibly stopped.

Next, the transmission/reception routine will be explained with reference to FIG.

When entering the transmission/reception routine, it is detected whether the PTT switch 14 is on (step C1). In step C1, P
When the TT switch 14 is in the on state, it is detected whether the code squelch is set (step C2').
If the code squelch has been set in step C2, the code squelch setting is canceled (step C3), and then the code squelch indicator 151 is turned off (step C4)', and the muting by the muting means 120 is canceled. (Step CS) Thereafter, the transmission/reception routine is completed and the device is returned to the stand point again.

When steps C1 to c5 are executed, reception is enabled by turning off the PTT switch 14.

When the code squelch is not set in step C2, it is detected whether the system operating state setting means 118 is set in the same way as in step b1 following step C2 (step C6).

In step C6, the system operating state setting means 118
If C is not set, the transmitting state is set (step C7), and then it is detected whether the PTT switch 14 is on (step Ce). In step C8, P
When the TT switch 714 is on, step 07''
is executed. Therefore, in step C8, PTT
The switch 14 is turned on in step C8.
Transmission continues until the PTT switch 14 is turned off. In this case, the transmission is not performed under system operating conditions, but is performed by a conventional Amade LA wireless communication device. In step C.8, PTT switch 1
4 is in the off state, the transmission state is canceled (step C
9) The transmission/reception routine is completed and the process is returned to the start.

In step C6, the system operating state setting means 118
is set, in step C6, RA
Specific frequency data storage area 15 provided in M38
2 (Specific frequency data set in advance and corresponding to a frequency outside the amateur band is loaded into the output data encoding means 141 instead of the frequency data stored in the empty channel data storage area 136)
to), then the group code (A) is loaded into the output data encoding means 141 (step Ctt), and the call sign data stored in the call sign code storage area 107 is then loaded into the output data encoding means 141.
(step Cl2), and encoded by the output data encoding means 141 (step c13).
).

Following step 013, the transmitter 2 is set to a data transmitting state (step C14), the communication device is set to a transmitting state (step Cl5), synchronized data is transmitted (step C16), and then encoded in step 01B. output data is transmitted (step C17)
. Upon completion of this transmission, the data transmission state is released (step 018). In steps OLD~017, the frequency data previously set in the specific frequency data storage 1 area 152 is encoded in place of the empty channel data, and is transmitted at the frequency corresponding to the frequency data stored in the frequency data storage area. It turns out. When the other party receives this transmission, the T1-F squelch is canceled as described later.

Transmission becomes possible upon completion of step CtS. Following step CtS, the secondary time of the second timer 153 is started (step c19).

At step CI9, it is detected whether the 'cPTT switch 14 is in the off state (step C20), and if the F'-r-r switch 14 is not in the off state, the set time of the second timer 153 has elapsed (step C21). ), when the set time of the second timer 153 has elapsed in step C21, the data transmission state is set as in step C14 (step C22>), synchronous data is transmitted (step C23), and the specific channel 1 in step b36 is set. The output data obtained by encoding the frequency data stored in the channel data storage area 152 as empty channel data is transmitted (step C24), the data transmission state is canceled (step C25), and the third timer 147 is stopped. (Step 026), and then step CtS is executed again. Therefore, CIg~
026, the transmission is temporarily interrupted every time the set period of the second timer 153 elapses, and the transmission of the output data is repeated. Further, while the transmission is being performed, the third timer 147 is reset in step 02G, and the 51 o'clock time of the third timer 147 is repeated.

When the PTT switch 14 is in the off state in step C211, it means that there is no intention to communicate, and output data is transmitted following step C20 in the same way as in steps 022 to C25 (steps 0.27 to C31).
1>, then the letter of transmittal fε is canceled (step c31)
, the third timer 147 starts counting (step C3
2) 7 After this, the transmission/reception routine ends and the process returns to the start. Steps C2 to C32 are the transmission routine.

When the PTT switch 14 is in the OFF state in step C1, return to step C1 and turn aj! Continued storage area 1
21 is detected and checked (step C33). When the flag is set in step 033, that is, when the line is connected, it is detected in step C33 whether the reset switch 139 is turned on (step C3).
4). In step C34, the reset switch 139
is off, that is, has not been reset, step C
34, it is detected whether there is input data (step C3s>). As mentioned above, in this embodiment, it is normally in the receiving state. After receiving the output data from the other party in step Cj5, step C is detected. :15, the input data is converted into parallel data by the serial/parallel conversion means 42, decoded by the input data decoding means 155 (step C36), and it is detected whether the group code (A) is selected. (Step C37
) When the first group code (A) is selected, the code comparing means 1.56 detects whether the group code in the input data matches the group code (A) (step 038).
).

When 8\]-do (A) is not selected in step C37, if the group code in the input data does not match the group code (A) in step C38,
Following steps C37 and C38, it is detected whether the group code (B) is selected (step C39).
, when the group code (B) is selected, it is detected whether the group code in the input code matches the group code (B) (step C40). If the group code (B) is not selected in step C39, step C
At 40, the group code in the input data is group code (B)
If they do not match, then in step C39,040, the setting of the third timer 147 is detected to see if the scheduled time has elapsed (step C41). Also step C
If there is no input data at the BS, step C35 is followed by step 041. Step CI7~
As is clear from C40, the handling is done by group codes (A) and (B).

Therefore, if a reset instruction is not given and there is no input data, then even if there is input data, if the input data does not match the selected group code, the third timer 147, muting is performed by the muting means 120 (step C42). Following step C42, the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage area 122, and the communication device loads the data stored in the S channel data storage area 123 from the reception state of the empty channel frequency. (S channel data discussed with the other party in step b6).
). Next, it detects whether code squelch is set.

(step C44), and if the code squelch is not set, muting by the muting means 120 is canceled (step C45), and the line connection storage area 121
The flag is reset (step C46). If the code squelch is set in step C44, step 046 is executed following step C44. Following step 046, the line box connection indicator 146 is turned off (step C47), the transmission/reception routine is ended, and the process returns to the start.

Further, when the reset switch 139 is in the on state in step C34, that is, when a reset instruction is issued, step C46 is executed following step 034. - Step C: At +3, the line connection storage area 121,
When the flag is reset, it is detected whether the reverse state setting means 148 is set (step C76). When the group code in the input data matches the group code (A) in step C38, step C4
If the group code in the input data matches the group code (B) in o, the third step follows steps C38 and C411.
starts the timer 147 (step C75),
Next, step C76 is executed. The third timer is reset by the start of the closing time in step 075, and the timer is counted again from the beginning.

When the reverse state setting means 148 is set in step C76, the state of the flag in the reverse state storage area 149 is detected (step C48). When the flag in the reverse state storage area 149 is set, the frequency data stored in the empty channel data storage area 136 is loaded into the frequency data storage area 122 (step C4!l), and the frequency data stored in the reverse state storage area 136 is loaded. When the flag is reset, the frequency data stored in the S channel data storage area 123 is loaded into the frequency data storage area 122 (step C5o), and step 04! ], C50, and then the state of the flag in the reverse state storage area 136 is inverted (step C51). When the flag in the reverse state storage area is reset in step C48, the frequency and data storage area 122Klu empty channel data is stored, and when the flag is set, the S channel data is stored in the frequency data storage area 122. By executing steps C49, C, and 5fl, the storage contents of the frequency data storage area 122 become t, where empty channel data and S channel data are exchanged. Therefore, if the line connection should have been established from the transmitting side's perspective, but the other party does not appear, it is possible to detect whether the frequency has returned to the one corresponding to the S channel data. Further, in step C51, the contents of the reverse state storage area 149 are set to a state corresponding to the storage contents of the frequency data storage area 122 (empty channel data or S channel data).

After step CSt, it is detected whether there is input data (step C52), and it is determined that there is no input data.
At that time, the sending/receiving routine ends and the process returns to the start. In step C76, reverse RX'J determining means 1
If 48 is not set, step CS2 is executed after step C7fl.

If there is input data in step C52, the input data is decoded (step Cs1), and then it is detected whether the group code (A) is selected (step C54), and the group code (A) is selected. If the group code is in the state of 0, it is detected whether the group code matches the forest group code (A>) in the input data (step C55).Step C
In SS, the group code in the input data is group code (A)
When it matches, the data display means 112 displays the group conid (
A,) is displayed (step C5e), and then it is detected whether the system dynamic hakama state is set (step C5e).
60).

If the group code (A) is not selected in step C54, and if the group code (A) in the input data does not match the fresh code (A) in step CSS, the process proceeds to steps C54 and C55. Then group code (B)
Check if is selected, 6□2 ketsua. 567,
i:]-,l'(B)S□ When i is selected, it is detected whether the group code in the input data matches the group code (B) (step C57). Step C5
If the group code in the input data matches the group code (B) in step C57, the group code (B) is displayed on the data display 112 (step Cs s
), step 055, , step Ca1l is executed subsequent to step C57. Step C56.

If the group code (B) is not selected at C57, and the group code in the input data does not match the group code (,B), the transmission/reception routine is ended at step C55057 and the process returns to the start. It will be done.

When the system is set in the operating state in step CSa, it is detected in step C6O whether the frequency corresponding to the empty channel data in the input data is within the amateur band (step C61).
. If it is determined in step C61 that the frequency corresponding to the empty channel data in the input data is not within the amateur band, the transmission/reception routine is terminated in step C61 and then returned to the start.

In step Cat, if the frequency corresponding to the empty channel data in the input data is a frequency within the amateur band, the empty channel data in the input data is R
fs frequency data is stored in the AM83 and corresponds to a frequency that is not to be drawn into the receiving state.
It is detected whether the frequency data matches the frequency data in the 5 data storage area (not shown) (step Of+2), and if they do not match, the state of the flag in the line connection 2 area is detected (step 063), and if they match, the transmission/reception is performed. After completing the routine, you are returned to the start.

When the flag of the line connection storage area 121 is reset in step 063, that is, when no line connection is made, the frequency data of the frequency data storage area 122 is loaded into the S channel data storage area 123 (step C64), and then the input data Save the empty channel frequency data to the frequency data storage area -1?2
(step C65). As a result, the frequency corresponding to the empty channel data in the input data is drawn. Data display 1 following step Cps
The call nine in the input data is displayed at 12 (step C66).

Following step C66, reverse state memory 1 rear 14
9 is reset in step C67), the flag in the line connection storage area 121 is set in step C68), and the third timer 147 starts timing at the same time (step C68).
Step C5a).

Further, following step aSS, it is detected whether the code squelch is set (step C7I), and if the code squelch is not set, the transmission/reception routine is terminated.
You will be returned to the start again. If the flag in the line connection storage area 121 is set in step 063, step C70 is executed following step C63. Also, in step C6o, the system operation status,
If the frequency data in the input data is not set to the specified state, it is detected in step 060 whether the frequency data in the input data is specific data (step 071), and if it is specific data, step C70 is executed following step C71. If the data is not specific, the sending/receiving routine ends and returns to the start.

When the code squelch is set in step C70, the 21-do squelch is divided by Wt (step C72), and the ]-do squelch indicator 151 is turned off. (
Step 073), canceling the muting by the muting means 120, step C74), and then ending the transmission/reception routine and returning to the start.

Therefore, when receiving code squelch, when there is input data, the group code matches the transmitted group code, the system is not in an operating state, and the empty channel frequency data in the input data is specific data, There is input data, the group code matches the transmitted group = 1-code, the system is in operating condition, and the frequency corresponding to the empty channel frequency data in the input data is 9 , □□slc*4R5t! □１
When it is not □°i-ta, code squelch is canceled and muting is canceled.

Note that steps 033 to G74 to C7S are a reception routine. - Also, in FIG. 3, reference numeral 157 indicates frequency data control means for performing frequency-related control, reference numeral 158 indicates a calling operation control means for performing control in the calling operation routine, and 15
Reference numeral 9 indicates a data output control means for controlling the encoding of output data when data is output, and 160 indicates a data input control means for controlling input data and the like when data is input.

In one embodiment of the present invention, steps b37°, steps 037 to C411, and stellar l054 to C57 are executed, a group code storage area 109°110 is provided, and the group code stored in the group code storage area 109 or 110 is stored. One of the group codes is selected as the group code constituting the output data, and the group codes stored in group codes 109 and 110 are used to receive the output data.

(Effects of the Invention) As explained above, according to the present invention, an empty channel can be automatically set as a communication channel.

In addition, it is possible to receive and receive not only the group code when the group is called 31 when the call is made, but also other groups.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing the configuration of the present invention. Fig. 2 is a block diagram showing one embodiment of the present invention. Fig. 3 is a functional block diagram for explaining the block diagram shown in Fig. 2. Figs. 4 to 6 are one embodiment of the present invention. Flow box for explaining the operation of the example. 1... Communication device body, 2... Transmitting section, 3... Receiving section, 4... Antenna switching section, 5... Frequency synthesizer, 6... ... Transmission/reception switching means, 7... Microphone,
9... Output data generation means, 10... Modulation signal switching means, 13... Speaker, 16... Calling instruction means,
17... Sky channel search means, 20 and 22...
- Storage means, 21, 256 and 27... selection means, 2
3.26 and 28... group code storage means, 24...
・Group: ]-de comparison means.

Claims (1)

[Claims] In an amateur radio communication device equipped with a frequency synthesizer that acts as a carrier wave oscillator when transmitting and a local oscillator when receiving, and a push-to-talk switch, a first transmitter that stores oscillation frequency data when making a call. a storage means, a second storage means for storing frequency data, a first group code storage means for storing a group code to be transmitted, a second group code storage means for storing a group code to be selected; , output data generation means for generating output data corresponding to the storage group code of the first group code storage means and the storage frequency data of the second storage means; a first selection means for selecting a group code; a third group code storage means for storing the group code selected by the first selection means; and a storage group code or a third group code for the first group code. a group code comparison means for detecting a match between the stored group code of the input data and the group code of the received input data; a call instruction means for instructing a call; and a search for an empty communication channel in response to the output of the call instruction means. and an empty channel search means for outputting frequency data of the searched empty channel, and an empty channel detection output of the empty channel search means to which the frequency data outputted from the empty channel search means and the frequency data in the input data are supplied. a second selection means that selects the former frequency data based on the detection output of the group code comparison means and transfers and stores the latter frequency data to the second storage means, and generates an empty call channel detection output of the empty channel search means. a third selection means that selects the frequency data stored in the first storage means for a predetermined period from the time, selects the frequency data stored in the second storage means after the elapse of the predetermined period, and supplies the selected frequency data to the frequency synthesizer as output frequency setting data; a transmitting/receiving switching means for switching the communication device from a receiving side to a transmitting side for a predetermined period from when an output of a push-to-talk switch is being generated or an empty channel detection output is generated; and an empty channel search means generating an empty channel detection output. and a modulation signal switching means for switching the modulation signal from the microphone output to the output data of the output data generation means for the predetermined period of time.