Hallicrafters SR-150 Operation And Maintenance Manual page 45

PERFORMANCE SPECIFICATION FOR THE SR-150
0. Calibration Adj. Limits (RIT control at OFF)
P. Dial Calibration (LSB)
1.
2.
3.
Q. RIT Control (RIT control at on)
1.
2.
**R. Overall Frequency Drift Limits (Lower Sideband Reception)
1.
2.
S. Audio Performance
1.
2.
By Walter Cates WD0GOF (UPDATE 10/30/2013)
1. The total range of each control shall be at least 3 KC.
2. Clockwise rotation shall increase frequency.
The error between adjacent 100 KC check points shall not exceed 1.0 KC
With the dial calibration set to zero at the high frequency end of the dial, the error at any
point shall not exceed + or - 3.0 KC.
Band to band calibration error shall not exceed + or – 2 KC.
The RIT control shall affect receiver frequency only. Clockwise rotation shall increase
receiver frequency.
The RIT control frequency range shall be + or – 3 kc minimum.
After a 15 minute warm-up, the total drift during the first hour shall not exceed 500 cps.
During the next 4 hours the frequency drift shall not exceed 200cps.
The hum level shall be less than 2.5 microwatts with the AF GAIN control set a
minimum. (Measure at 3.2 ohm terminals.)
Audio distortion shall not exceed 10% at one watt output. Receiver shall be tuned to xtal
marker at 3800 kc and a 1000 cps beat note generated for the test.
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