Zenith-Radio-Corp-710M 电路原理图.pdf

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1、VOLUME R-26, MOST-OFTEN-NEEDED 1966 RADIO SERVICING INFORMATION MODEL ROYAL 71OM ALL TRANSISTOR PORTABLE RADIO CHASSIS 7MT44Z2 Chossis Port No. osc. Mixer l*t I.F. 2nd I.F. Crystol Diode Detector Driver Output Supplier 7MT44Z2 Zenith E.I.A. T ype 121-258 2N1526 PNP 121-257 2N1524 PNP 121-259 2N1524

2、PNP 121-260 2N1524 PNP 103-44 or 403-1 121-319 2N408 PNP 121-320 2N408 Matched Pair PNP R. C. A. ALIGNMENT PROCEDURE Operation Input Signol Frequency Connect Inner Conductor From Oscillator To Connect Outer Shield Conductor From Oscillator To Set Dial At T rimmers Purpose 1 455 KC Chossis 600 KC Adi

3、- Tl, T2, T3 for moximum output. For. I.F. Alignment 2 1620 KC ONE TURN LOOSELY COUPLED TO Gong wide open C1C Set oscillator Do dial scole. 3 600 KC Set dial neor 600 KC Adjust slug in T6 Adjust T6 for maximum out put while rocking gong. Adjust for maximum output regordless of diol accuracy. 4 REPEAT STEPS 2 & 3 WAVEMAGNET 5 1260 KC 1200 KC CIA Align loop ont. 166 收音机爱 好者资料库 RadioFans.CN