[Hallicrafters] Re: HT-32 audio

K6JEK k6jek at comcast.net
Thu May 5 09:56:18 EDT 2005


This isn't my transmitter, honest.  I'm trying to encourage the owner 
to work on it a bit so when I'm talking to him through my CE 100V, he's 
talking to me through his HT-32 not his ICOM.   He's about given up on 
it, concluding the filter makes good audio impossible.

Does the HT-32 have the usual arrangement of one filter with a shift of 
  the carrier oscillator above or below to select LSB or USB?   Some 
BA's  like the T4XC have two filters.

The bandwidth is specified as 650 - 3000 Hz at -3 dB.  It will be 
somewhat wider (how much?) at -6 dB, the figure we tend to use these 
days when talking about bandwidth.  This ought to be wide enough for 
better than communications grade audio.   Are there a well known set of 
tricks for the HT-32 for getting the most out of it as there are for 
say the Johnson Valiant?    Changing the first audio grid resistor, 
increasing this cap, taking out that cap, that sort of thing?

Thanks,

Jon





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