Philco-Radio-and-Television-Corp-C-1348 电路原理图.pdf

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1、MANUAL OF I9SS MOST-OFTEN-NEEDED RADIO DIAGRAMS PHILCO RADIO-PHONOGRAPH MODEL C1348 STEP SIGNAL GENERATOR RADIO ADJUST TRIMMER CONNECTION TO RADIO DIAL SETTING DIAL SETTING SPECIAL INSTRUCTIONS Output lead through a .01-pf. condenser to grid (pin 6) of 7A8 converter tube. 455 kc. (modulated) Gang fu

2、lly open Adjust, in order given in next column, for maximum output. TC2 and TC4 are located at top of transformers. TC42nd i-f sec. TC32nd i-f pri. TC21st i-f sec. TCI1st i-f pri. 2 Radiating loop. (See NOTE 1 below.). 1620 kc. 1620 kc. (See NOTE 2 below.) Adjust for maximum output. C1Boscillator tr

3、immer 3 Same as step 2. 1520 kc. 1520 kc. (See NOTE 2 below.) Adjust for maximum output. CIAantenna trimmer NOTE 1: Make up a 68 turn, 6-inch-diameter loop from insulated wire; connect to signal-generator leads, and place near radio loop. NOTE 2: The tuning gang can be set to 1620 kc. and 1520 kc. by turning the tuning control until the pointer coincides with the respective marks on the dial backplate. 72 收音机爱 好者资料库 RadioFans.CN