RCA-Victor-Co-Inc-RZG111 电路原理图.pdf

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1、ItCJI Models RZG 111, 120 Schematic Diagram Chass s Layout (Component View) ALIGNMENT PROCEDURE Instruments Required 1. RF Signal Generator (RCA WR-50B or equivalent) 2. Electronic Voltmeter (RCA WV-500A or equivalent) General 1. Signal input must be as low as possible to avoid overload and clipping

2、. (Use highest sensitivity of output indicator.) 2. Loudness control at maximum. 3. Standard modulation is 400 cycles at 30% amplitude. Step Instrument Connections Set Signal Set Dial Adjust for Max. 1 2 3 RF Generator Connected to TP1 or short piece of wire near antenna 455 kc Gang Closed L3 (1st I

3、F) L4 (2nd IF) L5 (3rd IF) 4 Repeat Steps 1 through 3 to obtain maximum sensitivity 5 6 7 E.V.M. connected to TP 2 525 kc Gang Closed L2 (Osc. coil) 1650 kc Gang Open CA2T (Osc. trim) 1400 kc 1400 kc Rock gang CA 1 T (Ant. trim) 8 Repeat Steps 5 through 8 to obtain best tracking and selectivity Dial Cord Arrangement - RZG 120 124 收音机爱 好者资料库 RadioFans.CN