Galvin-Mfg-Co（Motorola）-HS-746 电路原理图.pdf

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1、VOLUME R-21, MOST-OFTEN-NEEDED 1961 RADIO SERVICING INFORMATION MODELS A3 B, N CHASSIS HS-746 R1 12BE6 L2 C3 CIO 12BA6 T3 CONV I IF AMP 12AV6 DET-AVC-AF AMP/ INTERLOCK R12 PLUG CONTACTS SUPPORT BRACKET ALIGNMENT POINTS AND PARTS LOCATIONS b 1400 KC 455 KC 455 KC OSC TRIM TOP (3) TOP Q 1620 KC BOT 0

2、BOT ALIGNMENT Use an eolation ran former between the power line and the receiver. If not ava lable. connect low s.de of venerator to B- through a . 1 mf capacitor. Connect a low range output meter across speaker voice coil and set volume control to max mum. Attenuate generator output to maintain .4

3、volts on output meter to prevent overloading the receiver. STEP GENERATOR CONNEC TION GENERATOR FRECUENCY (400 cycle mod) GANG SETTING ADJUST REMARKS IF ALU L.NMENT 1. 12BE6 grid (pin 7) thru . 1 mf & B- 455 Kc Fully open 1, 2, 3 6 4 Adjust for maximum RF ALIGNMENT 2. Radiation loop* 1620 Kc Fully open 5 Adjust for maximum. 3. ! 1400 Kc Tune for max 6 M 85 !|-)l 收音机爱 好者资料库 RadioFans.CN