RCA-Victor-Co-Inc-RC-1098 电路原理图.pdf

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1、MANUAL OF I9SI MOST-OFTEN-NEEDED RADIO DIAGRAMS rcaVictor Model B-411 Chassis No. RC-1098 or RC-1098A 1U4 v 2 OET-A.F.-A.V.C. - ten t / ttcJ o ?6-106 72.,a LZ0jjgU3 CHASSIS RC-1098 USES INDIVIDUAL RESISTORS AND CAPACITORS. CHASSIS RC-I038A USES TWO PRINTED CIRCUIT ELEMENTS (0-S4266O-I &. B-942653-l)

2、. CONNECTION POINT NOS. 3)T0 REFER TO PRINTED CIRCUIT ELEMENTS. Allresistance values in ohms, k = 1000 . ALL CAPACITANCE VALUES LESS THAN 1.0 IN ME AND ABOVE i.O IN MMF. UNLESS OTHERWISE INDICATED. A+ *CONNECTOR r* R 9 02 I MEG. -001 R7 J JR2 4.7 I J DIODE FILTER UNIT AUOlO COUPLING UNIT B 942660-1

3、B 942659-1 Output Meter.Connect meter from No. 2 terminal of V4 (plate of 3V4) to ground. Turn volume control to maximum position. Test-Oscillator.For all alignment operations, connect the low side of the test-oscillator to the receiver chassis, and keep the oscillator output as low as possible to a

4、void a-v-c action. Note:The inductance of the antenna coil is adjusted by sliding the coil along the Ferrite rod. This ant. coil is supplied pre-adjusted and cemented to rod. This makes further adjust ment unnecessary. 1U5 1U4 3V4 MMTENNA COIL *4 TERMINAL ON SOCKET OF 3V4 -OSCILLATOR COIL ADJUSTMENT

5、 L2 -TUNING CAPACITOR TOP-ANT. SECTION BOT.-OSCILLATOR SECTION -(OSC. TRIMMER C1-IT) Connect th high Btps id* of test osc. Tuns tost- Turn radio to ooc. to dial to Connection iug of Ci-2 iooatsd on rear of gang in series with .Of mf. : Ouiet point near 1600 kc Adjust the following for max. peak outp

6、ut CI8, C19 2nd I-F trans. C16, CI7 let I-F trans. Repeat steps 1 and 2 VOLUME CONTROL R6 1400 kc Rock gang C1-1T (osc.)l cragHQ- B+ B- 108 Tube and Trimmer Locations * Antenna coupling 60 S loop 600 kc Rock gang L2 (osc.) (Chassis in case) Repeat steps 4 and S *Steps 4 and S require a coupling loop from ihe signal generator io feed a signal into the receiver ant. ooil. This loop should be loosely coupled io the receiver antenna coil so as not to disturb the receiver ant. coil inductance. 收音机爱 好者资料库 RadioFans.CN