Firestone-Tire-and-Rubber-Co-4-B-83 电路原理图.pdf

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1、VOLUME R-17, MOST-OFTEN-NEEDED 1957 RADIO SERVICING INFORMATION THE FIRESTONE TIRE & RUBBER CO. Stock No. 4-B-82 Stock No. 4-B-83 Code No. 120-6-MP69 Code No. 120-6-MP126 (6 Volt) (12 Volt) This is an exact schematic for the 12-volt model. The 6-volt model is identical except that the tubes are of t

2、he correspond ing 6-volt series. ALIGNMENT PROCEDURE Connect dummy antenna in series with out put lead of signal generator. Connect ground lead of generator to chassis. All adjustments maximum. For alignment input points refer to sche matic diagram. 1. Set receiver dial at extreme high end (1610 KC)

3、. Adjust T2 top and bottom at 265 KC. Adjust T1 tcp and bottom at 265 KC. Adjust CT-3 for 1610 KC. 2. Tune in 1400 KC signal from generator. Adjust CT-1 and CT-2 (63 MMFD dummy). 3. After installing radio in car, re-trim CT-1 on weak station near 1400 KC with antenna fully extended. PUSH-BUTTON OPER

4、ATION To set any push-button, pull the button straight out. 0 12X4. select the desired station with the STATION SELEC TOR KNOB and press in the push-button. Any push button may be re-set at any time without disturbing the setting of the other buttons. Tube and Trimmer Locations 34 收音机爱 好者资料库 RadioFans.CN