[Elecraft] K3 Subrx spurious responses

Graham Kimbell (G3TCT) g3tct at lineone.net
Wed Mar 24 06:31:14 EDT 2010


My subrx shows spurious responses when tuned to the 50MHz band - I found FM b/c signals audible. When I measured the response I found 

92.1MHz     -57dB
75.6MHz     -54dB
117.6MHz   -38dB
134.0MHz   -43dB

due to harmonics of the local oscillator.
Guess I'll have to make myself a low pass filter...

Graham


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