Noblitt-Sparks-Industries-Inc-RE-397 电路原理图.pdf

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1、VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION ARVIN INDUSTRIES Model 958T Chassis RE-397 ALIGNMENT PROCEDURE PRELIMINARY: Output meter connection.Across speaker voice coil Output meter reading to indicate 500 milliwatts (standard output). . . 1.26 volts Connection of generator grou

2、nd lead.Floating ground Generator modulation.30% 400 cycles Position of Volume Control.Fully clockwise Position Frequency Generator Trimmers Adjusted Function of of Dummy Output in Order Shown for of Variable Generator Antenna Connection Maximum Output Trimmer Open 455 Kc .05 pfd Pin 7 12BE6 Al, A2,

3、 A3. A4 I.F. Open 1650 Kc * Test Loop A5 Oscillator 1400 1400 Kc * Test Loop A6 Antenna 1000 1000 Kc * Test Loop Fan CIA Plates 600 600 Kc * Test Loop Fan C1A Plate s * Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6 in dia meter placed about one foot from the set loop. The alignment procedure should be repeated in the original order for greatest accuracy. 收音机爱 好者资料库 RadioFans.CN