44
By Walter Cates WD0GOF (UPDATE 10/30/2013)
PERFORMANCE SPECIFICATION FOR THE SR-150
**J.
Image and Spurious Responses
All frequencies other than the fundamental shall be down at least 55 dB on all
bands (except I.F. rejection).
K.
1
st
I.F. Rejection Ratio (6.0 to 6.5 mc)
Band
Minimum Rejection
3.5 mc
50 dB (300 X)
7.0 mc
40 dB (100 X)
14.0 mc
66 dB (2000 X)
All other bands
70 dB (3000 X)
**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.
Receiver tuned to 14.3 mc for the check.
2.
Set signal generator for 5 microvolts unmodulated and tune for maximum audio output.
Set receiver audio gain for 50 mw audio output.
3.
Increasing signal input level 50db shall not increase audio output more than 10 db.
N.
“S” Meter Calibration Limits
1.
“S” meter shall be zero set before checking.
2.
Receiver tuned to 14.3 mc for the check.
3.
A meter reading of S-9 shall be obtained with a signal generator level between 25 and
100 microvolts.
Summary of Contents for SR-150
Page 18: ...By Walter Cates WD0GOF UPDATE 10 30 2013 18...
Page 19: ...By Walter Cates WD0GOF UPDATE 10 30 2013 19 BEFORE CLEANING CLEAN CHASSIS...
Page 20: ...By Walter Cates WD0GOF UPDATE 10 30 2013 20 3 1 2 TUBE SOCKET CLEANING KIT...
Page 21: ...By Walter Cates WD0GOF UPDATE 10 30 2013 21 3 1 3 AIR VARIABLE CLEANING...
Page 30: ...By Walter Cates WD0GOF UPDATE 10 30 2013 30 3 5 5 K3 WIRING AND PIN OUT...
Page 38: ...By Walter Cates WD0GOF UPDATE 10 30 2013 38 4 DATA SHEETS...
