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Posts tagged ट्रांसीवर

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

micro transmitter fm

micro transmissor fm circuit using bf49402 Simple 30 meters range FM transmitter using bf49402 BAT      3 – 6 volts C1     47nF C2     4,7pF C3     100nF CV1     3pF – 30pF T1     bf494 R1     2k7 R2     8k2 R3     5k6 R4     47

Power compo audio circuit

Power compo audio circuit using LM1875

Relay Driver circuit using Light Dependent Resistor

Relay Driver circuit using NE5534, LDR – Light Dependent Resistor

DTMF TOUCHTONE GENERATOR

DTMF TOUCHTONE GENERATOR DIP16 TCM5089N DTMF TOUCHTONE GENERATOR DIP16 TCM5089N

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