JPS6178443U - - Google Patents
Info
- Publication number
- JPS6178443U JPS6178443U JP16268884U JP16268884U JPS6178443U JP S6178443 U JPS6178443 U JP S6178443U JP 16268884 U JP16268884 U JP 16268884U JP 16268884 U JP16268884 U JP 16268884U JP S6178443 U JPS6178443 U JP S6178443U
- Authority
- JP
- Japan
- Prior art keywords
- carrier wave
- demodulated signal
- input level
- wave input
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の第１実施例に係るＦＭ移動無
線機の要部の構成を示すブロツク図、第２図は第
１実施例におけるフイルタ特性を示すグラフ、第
３図は本考案の第２実施例に係るＦＭ移動無線機
の要部の構成を示すブロツク図、第４図は従来の
ＦＭ移動無線機の要部の構成を示すブロツク図で
ある。
１…復調器、２…ローパスフイルタ、３…ＡＦ
増幅器、４…雑音増幅器、５…整流器、６…スケ
ルチ、７…スピーカ、１１…切り換え器、１２…
ローパスフイルタ、１３…ハイパスフイルタ、２
１…切り換え器、２２…高域用スピーカ、２３…
低域用スピーカ。
FIG. 1 is a block diagram showing the configuration of the main parts of the FM mobile radio according to the first embodiment of the present invention, FIG. 2 is a graph showing the filter characteristics in the first embodiment, and FIG. FIG. 4 is a block diagram showing the configuration of the main parts of the FM mobile radio according to the second embodiment, and FIG. 4 is a block diagram showing the structure of the main parts of the conventional FM mobile radio. 1...Demodulator, 2...Low pass filter, 3...AF
Amplifier, 4... Noise amplifier, 5... Rectifier, 6... Squelch, 7... Speaker, 11... Switch, 12...
Low pass filter, 13... High pass filter, 2
1...Switcher, 22...High frequency speaker, 23...
Low frequency speaker.
Claims (1)
された信号の周波数特性を制御する手段を有する
ことを特徴とするＦＭ移動無線機。 (2) 前記手段は、搬送波入力レベルが低い場合
には復調された信号をハイパスフイルタを通し、
搬送波入力レベルが高い場合には復調された信号
をローパスフイルタに通すものであることを特徴
とする実用新案登録請求の範囲第１項記載のＦＭ
移動無線機。 (3) 前記手段は、搬送波入力レベルが低い場合
には復調された信号を高域スピーカのみで再生し
、搬送波入力レベルが高い場合には高域スピーカ
と低域スピーカとで復調された信号を再生するも
のであることを特徴とする実用新案登録請求の範
囲第１項記載のＦＭ移動無線機。[Claims for Utility Model Registration] (1) An FM mobile radio device characterized by having means for controlling frequency characteristics of a demodulated signal according to a carrier wave input level of a receiver. (2) The means passes the demodulated signal through a high-pass filter when the carrier wave input level is low;
FM according to claim 1 of the utility model registration, characterized in that when the carrier wave input level is high, the demodulated signal is passed through a low-pass filter.
Mobile radio. (3) The means reproduces the demodulated signal only by the high-frequency speaker when the carrier wave input level is low, and reproduces the demodulated signal by the high-frequency speaker and the low-frequency speaker when the carrier wave input level is high. The FM mobile radio according to claim 1, which is a utility model registration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16268884U JPS6178443U (en) | 1984-10-26 | 1984-10-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16268884U JPS6178443U (en) | 1984-10-26 | 1984-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6178443U true JPS6178443U (en) | 1986-05-26 |
Family
ID=30720562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16268884U Pending JPS6178443U (en) | 1984-10-26 | 1984-10-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6178443U (en) |
-
1984
- 1984-10-26 JP JP16268884U patent/JPS6178443U/ja active Pending
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