HQ-120X 'Pre War' Receiver Test Results

[W1VD]

Receiver: Hammarlund HQ-120X

Band	MDS	Blocking DR	Two-tone DR
		(20 kHz)	(20 kHz)
80 meters	-135 dBm	107 dB	81 dB
40 meters	-136 dBm	105 dB	76 dB
20 meters	-135 dBm	104 dB	75 dB

AM audio S/N: 54 dB

Additional measurements of AM audio frequency response and distortion can be found at

http://www.w1vd.com/BAreceivertest.html

Scroll down to link Hammarlund HQ-120X

Many thanks to Tom, WA3KLR for making this receiver available for testing.

[KM1H]

Those 3 IF stages sure help but that is the only radio Ive seen that uses a power pentode in an IF stage. Guess it doesnt overload Im surprised the 20M MDS is that good, thats better than many riceboxes. It says something about Hammarlunds skill in minimizing circuit losses considering the tubes used.

My HQ-120X gets cycled into service along with the others that can actually be used on the bands.

Carl
KM1H