DriverPowerLPFtoantenna amp.amp. D33D32 S5 — TXC Q37 IC3a Powerdetector T4+circuit(D32,D33) APCcontrolcircuit 4-3 Thesignaloutputfromthepowerdetectorcircuit(D32,D33)4-4POWERSUPPLYCIRCUITS isappliedtothedifferentialamplifier(IC3a,pin2),andthe VOLTAGELINE “T4”signalfromtheexpander(IC10,pin11...
OPC-1122U EXT.SPEAKER (5W/4Ω) AUDIOGENERATORACMILLIVOLTMETER (300–3000Hz/1–500mV)(10mVto10V) −+ SETTING; Frequency:1kHz GND+− Level:40mVrms+− SPWaveform:Sinewave GND MIC+ GND4.7µF PTT PTTSWITCH Addajumperwirehere 6-1 ¤ADJUSTMENTCHANNELS •For[Lowband]version •For[Hig...
(Q138).Theamplifiedsignalisappliedtothedriverampli- fiers(Q921)toobtain1.0WofRFpower. 4-2-3DRIVE/POWERAMPLIFIERCIRCUITS (RFUNIT)Theamplifiedsignalispassedthroughtheantennaswitch- ingcircuit(D51andD52),low-passfilterandhigh-passfil- TheamplifiercircuitamplifiestheVCOoscillatingsignalto ters.Thehigh-pass...