[Heathkit] hw-2036a hum

[Bwana Bob]

Mike:

The "hum" may actually be an 833.33 Hz tone from the synthesizer. Most 
HW-2036's have this low level tone on the audio, both transmit and 
receive. No way to filter it out, but you might check to see that all of 
the circuit board mounting studs and ground connections are tight.

				73,

				Bob WB2VUF

Michael Tortorella wrote:
> Howdy all,
> 
> Have just been advised by my listeners that this rig transmits a "hum" on
> top of the speech audio.  It's higher than 60 Hz, present when running on
> battery power, and no difference whether the PL tones are on or off.  I also
> hear a low level tone in the receive audio.  Is there a known failure mode
> like this in this radio?  I am the original owner/builder, it's worked like
> a champ for 20 years.  Any hints appreciated!
> 
> Thanks and 73
> Mike W2IY
> 
> 
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