Hallicrafters SR-150 Operation And Maintenance Manual page 44

PERFORMANCE SPECIFICATION FOR THE SR-150
**J. Image and Spurious Responses
bands (except I.F. rejection).
st
K. 1 I.F. Rejection Ratio (6.0 to 6.5 mc)
Band
3.5 mc
7.0 mc
14.0 mc
All other bands
**L. Tweets
All "tweets" or "birdies" Within the amateur bands shall be less than 0.5 microvolt equivalent
CW Signal.
M. AGC Figure of Merit Limit
1.
2.
3.
"S" Meter Calibration Limits
N.
1.
2.
3.
By Walter Cates WD0GOF (UPDATE 10/30/2013)
All frequencies other than the fundamental shall be down at least 55 dB on all
Receiver tuned to 14.3 mc for the check.
Set signal generator for 5 microvolts unmodulated and tune for maximum audio output.
Set receiver audio gain for 50 mw audio output.
Increasing signal input level 50db shall not increase audio output more than 10 db.
"S" meter shall be zero set before checking.
Receiver tuned to 14.3 mc for the check.
A meter reading of S-9 shall be obtained with a signal generator level between 25 and
100 microvolts.
Minimum Rejection
50 dB (300 X)
40 dB (100 X)
66 dB (2000 X)
70 dB (3000 X)
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