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Hallicrafters SX-73 Receiver
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The Hallicrafters
SX-73 (R-274) communications receiver was manufactured from 1952
to 1954 for the military-commercial market. It sold new
for $975.00. This baby weighs 58 pounds and is 20X11X18.5 inches,
and fits into a 19 inch rack. It is a two-tone gray steel cabinet.
Unfortunately this receiver is not complete...it is missing the Hallicrafters
name plate, dial lock and the S-meter is not original. |
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This receiver requires a speaker,
and Hallicrafters recommended the Hallicrafters R-46 speaker to
go with it. It has audio output of 600/50 ohms and antenna input
of 50-200 ohms. It has a BFO injection control and carrier meter
adjustment on rear. |
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The Hallicrafters SX-73 receiver
has 6 fixed crystal positions with crystal vernier tuning.
Its ranges are: .54-1.35, 1.35-3.45, 3.45-7, 7-14.4, 14.4-29.7 abd
29.7-54 MHz. It has receive/standby, BFO, AVC and ANL switches. |
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The Hallicrafters SX-73 receiver
is a double conversion super heterodyne general coverage communications
receiver. It has 17 tubes plus voltage regulator, ballast tube
and rectifier. It has 2 IF and 2 RF stages and is single conversion
below 7 MHz. The coils are mounted on a turret and mechanically
move into active circuit to reduce cross modulation. |
Copyright © 2003