Firestone-Tire-and-Rubber-Co-4-A-89 电路原理图.pdf

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1、MANUAL OF 19S1 MOST-OFTEN-NEEDED RADIO DIAGRAMS fire$tont CODE NO. STOCK NO. STOCK NO. 297-0-3123 4-A-85 Walnut 4-A-89 White I2AU6 converter I2BA6 I F AMP I2AV6 DODE-AUDIO 50C5 OUTPUT Steps Set Receiver dial to: TEST OSCILLATOR Adjust test oscillator frequency to: Attach output of test oscillator to

2、: DUMMY ANTENNA Refer to parts layout diagram for lo cation of trimmers mentioned below: Any point where no interfering signal is received. EXACTLY 455 KC High side to grid of 12AU6 Tube. Low side to common negative. .05 MFD. CONDENS ER. Adjust slugs at top and bottom of 2nd I.F.(T2) and then each o

3、f the slugs of the 1st I.F. (Tl) for max. output. 2 Exactly 1620 KC Exactly 1620 KC External Antenna blue lead on loop. 100 ftMFD OONDENSft Adjust 1620 KC oscillator trimmer for maximum output* 3 Approx. 1400 KC Approx. 1400 KC External Antenna blue lead on loop. wm Adjust 1400 KC antenna trimmer for maximum output. 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN