Hallicrafters SR-150 Operation And Maintenance Manual page 49

PERFORMANCE SPECIFICATION FOR THE SR-150
L. Operation of VOX Delay Control.
VOX relay delay shall increase with clockwise rotation of the DELAY control set at
approximately ½ rotation.
M. Output Level Meter Check
1.
2.
N. Automatic Audio Level Control Check
1.
2.
O. Spurious Output
1.
2.
**3.
P. Controls and Outlets
All controls and outlets shall be tested for proper operational functions.
Q. Crystal Calibrator
The 100 kc crystal oscillator shall be set to zero beat with WWV or equal frequency standard.
The trimmer range shall be sufficient to permit setting the frequency to exactly zero beat.
By Walter Cates WD0GOF (UPDATE 10/30/2013)
Test at 50 watts output on any band.
The S meter shall indicate no less than S-8 or more than 50 dB over S-9
Test Conditions
SSB operation with two tone (1000 cps and 2000 cps) input level as required to produce
slight flat topping of oscilloscope display.
Removal of AALC tube V5 (6EA8) shall produce measurable increase in envelope flat
topping or excessive flat topping indicating AALC operation.
The transmitter shall be tuned and operated in SSB mode at 7 mc. Two tone input level
shall be adjusted for slight flat topping to produce PEP output signal.
Disable the heterodyne oscillator tube (V8, 12ST7) and measure the 6.5 mc spurious
signal present. (Do not remove the oscillator tube to disable.) Residual 6.5 mc spurious
signal shall be 46 dB or more below PEP output.
All other spurious signals shall be 50 dB or more below PEP output, except harmonics
which shall be down 36 dB or more.
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