Sangean MMR-77, Service Manual

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4. ALIGNMENT FOR MW FREQUENCY
a. Required Instrument
RF signal generator
SSVM
b. Alignment Procedure
Mode Adjustment Procedure
(1) Set the power switch to ON position.
(2) Connect a SSVM to the AF out (TP3 and TP4).
(3) Connect the AM signal generator to the loop antenna
(4) Set signal generator to 511KHz, with 30% modulation set tuning gang fully
closed, and adjust T2 for T2 for maximum reading on SSVM.
(5) Set signal generator to 1735KHz set tuning gang fully open, and adjust TC4
maximum reading on SSVM.
MW
T2
TC4
(6) Repeat steps (4) and (5) until best sensitivity is obtained at both frequencies.
c. Instrument Connection
T2
TC4
TP3
TP4
SSVM
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