TH3773C3 - Radio transceiver frequency 26-27 MHz - Google Patents

Abstract

The radio transmitter frequency 26-27 MHz according to this invention consists of a radio transmitter and receiver from the transmitter circuit, the S1 power supply will turn on-off the power through the resistor (RT1) (220 Ω) to the C. The scanner diode (DT2) is limited to 4.7 V using ICT 1 for positive and negative phase switching. Will pass resistor (RT4) (5.6 K) to transistor (Q4) through resistor (RT6) (2.2 K) to transistor (Q3) to mix RF radio waves 26-27 MHz will pass transistor (Q3), (Q1), C of Q3 through condenser (CT16) (75pF), adjustable coil can (TT1), constant coil (LT2) (3.3uH) to amplify the signal strength, resulting in increased receiving distance. Send farther into the antenna, radio waves will enter the transmitter antenna to the condenser (CR11) (6pF) through IC4 with the condenser. (CR10) (18pF), (CR39pF), A constant coil (RR3) (1uH) is involved in the production of IF frequencies, with a ceramic filter (CF1) as a means of combining the 455 KHz difference. Will enter IC 4 to amplify the radio frequency Exit the information signal, forcing IC 1 and IC2 to on-off the motor (M1) and (M2), and IC3 to transistor (TR6) through resistor (R22K) to force IC2 to on-off the motor (M2) and IC3 promises to transistors (TR4), IC1 to force IC1 to turn on-off the motor (M1) and DC 6 V power supply is passed through resistor (RES) 1 ohm with condenser (C3), (C4) acting filter. The grounding current of DC 6 V is passed through the 3V zener diode to supply the IC4 while another 6 V DC (DC) current is connected to the motor (M1), (M2), the negative pole of the motor (M1). ), (M2) are integrated to IC1, IC2 receive signals from transistors (TR4), (TR6) to force IC1 and IC2 to act as switches. Connect the circuit to ground the circuit.

Claims (1)

1. The radio transmitter frequency 26-27 MHz consists of a radio transmitter and receiver circuit, power transmitter (S1) will turn on-off the power through the resistor. (RT1) (220 formula) goes into the zener diode (DT2), limiting power 4.7 V, sent to ICT1 to act as a positive-negative phase switch, will pass resistor (RT4) (5.6K) to transistor (Q4) through it. The resistance (RT6) (2.2K) goes to the transistor (Q3) to do the radio wave mixing. The produced RF values are approximately 26-17 MHz. It is passed through the transistor (Q3), (Q1) to amplify the signal strength. The mixture is exited from the condenser (C) of Q3 transistor through the condenser (CT16) (75pF), variable coil canister (TT1), constant coil (LT2) into the antenna. The radio waves enter the receiver antenna. The constant coil (LR1), (T1) acts only 26-27 MHZ joules, passed to the condenser (CR11) (6pF) through IC4 with the condenser. (CR10) (18pF), (CR9) (39pF), a constant coil (RR3) (1uH) is involved in the production of the IF frequency into (IC 4) to amplify the radio frequency from the signal, the information passed through the transistor. (TR5), (TR5), (TR4) and (TR6) forces (IC1) and (IC2) to turn-off the motor (M1), (M2) and (IC3) to the transistor (Q6) through a resistor ( R22K) to force (IC2) to act on-off the motor (M2) and (IC3) signal to transistor (TR4), resistor (R22K), (IC1) to force (IC1) to act on-off motor M1 and A 6V DC (DC) power supply is passed through a 1 ohm resistor (RES) with (C3), (C4) acting as a grounding current filter. 6V direct current (DC) is passed through a 3V zener diode to supply (IC4), another 6V DC (DC) power, positive pole to (M1), (M2) negative of (M1), (M2) will be integrated to IC1, IC2 receives signal from transistor (Q4), (Q6) to force IC1 and IC2 to act as switch. Connect the circuit to ground the circuit with the special characteristics Transistor wave mix (Q3) is forwarded to the leg B of the transistor (Q1) to amplify the mixed signal strength from (C) of the transistor (Q3) through (CT16) (75pF), (TT1). And (TT1) acts as an adjustable coil, adjusting the strength of The strongest signal is passed through a constant coil (LT2) (3.3uH) to the antenna for air output, and in receiver coupling (IC4), the signal is mixed with the radio frequency signal generated. From crystal ore Through the condenser (CR10) (18pF), (CR9) (39pF), constant (RR3) (1uH) co-produce the IF frequency and the produced frequency must be different from the frequency from the transmitter. Sir) and the offset must be a frequency with a difference of 455 KHz.