Belmont-Radio-Corp-11A25 电路原理图.pdf

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1、MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS FAQMT VIEW SECTION I Of BANOSWlTCM I-c 6SK7 CJ) tTsTm c* r Soli 1 . csroTl* ti 25 Mfd. x 450 V.; 25 Mfd. x 450 V. S.W. Antenna Trimmer - S.YV. and B.C. R.F. Trimmer-Dual- _ S.W. and B.C. Osc. TrimmerDual- B.C. Antenna Trimmer - Ha 1 flirt t .000525 Compre

2、ssion Cond.B.C. Pad- AJUUI .0005 Mica Type Condenser20%- n _ J .0004 Mica, Type Condenser20%-.-. XAVi 1 f .00005 Mica Type Condenser20%- l1 .0001 Mica Type Condenser20%- .0024 Compression Mica Condenser- .00025 Mica Type Condenser20%- ijci 11(125 Alignment Procedure controlMaximum all adjustments. :

3、 dummy antenna value in series with generator output lead. % *Ej r X“ T5Y3G j RECTIPIEK 6F6G1ufilioFoG output T I T output Belmont Radio R2, R18 R4 R5 R6, Rll R8 R9, Rl9, R22 R7 R15 Rl2 R14 R2l R20, R23 RESISTORS Volume Control and Switch (500M Ohms) Less Shaft- , Tone Control (1 Megohm) Less Shaft_

4、 Shaft Only for Volume and Tone Controls 1 Megohm1/3 Watt Resistor20%- 3Q(1M Ohm1/3 Watt Resistor20%_ 40M Ohm1/$ Watt Resistor20%_ 500 Ohm14 Watt Resistor20%_ 12M OhmJd Watt Resistor20%_ 100M OhmYs Watt Resistor20%_ 12M Ohm2 Watt Resistor10%. SOM OhmVz Watt Resistor20%_ 3 MegohmYz Watt Resistor25%_

5、5 Megohm1/$ Watt Resistor30%. 2500 OhmYi Watt Resistor20%_ 500M Ohm*/$ Watt Resistor20% - 250M OhmWatt Resistor20% 300 Ohm1 Watt Resistor20%_ 300 OhmM Watt Resistor20%_ 400 OhmYi Watt Resistor20%_ 1 MegohmIn Eye Socket- BAND SIGNAL Frequency Setting GENERATOR Dummy Antenna Connection to Radio Grid o

6、f 6SK7 I F. Grid of 6SA7 Mixer Position of Band Switch Variable Condenser Setting Rotor full open (Plates out of mesh) Rotor full open (Plates out of mesh) Trimmers Adjusted to Maximum (in Order Shown) Two trimmers on top Output I. F. Two trimmers on top Input I. F. SHORT WAVE BAND External Antenna

7、and Ground External Antenna and Ground External Antenna and Ground Short Wave Short Wave Short Wave Set Dial at 17 Me. Set Dial at 17 Me. Set Dial at 6 Me. C13, S.W. Osc. CS, S.W. R.F., C2 S. W. Antenna Cll S.W. Osc Series Pad See Note “A” BROAD CAST BAND Grid of 6SK7 R- F. Tube Grid of 6SK7 R. F. T

8、ube Grid of 6SK7 R. F. Tube Rotor full open (Plates out of mesh) Set Dial at 540 Kc. (Plates in Mesh) Set Dial at 1400 Kc. C14 B.C. Osc. 02 B.C. Osc. Series Pad C9 B.C R.F. LOOP ALIGN MENT External Antenna and Ground External3 Antenna arfd Ground Set Dial at 1400 Kr. Set Dial at 600 Kc. Cl B.C. Am. T2 Iron Core Tracking Coil NOTE “A”Turn the dial back and forth slightly (rock) and adjust trimmer until the peak of greatest intensity is obtained. * After each band is completed, repeat the procedure as a final check. COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN