[SignalOne] Greetings from 1970 - Two questions.

[jerry]

On 2024-11-19 16:02, Scott McDonald wrote:
> Jerry, your tales of the last few weeks caused me to liberate my two
> hamfest beater CX7As from storage.
> 
*** Happy to inspire you :).

> As always this prompts questions, and I'd really appreciate anyone's
> feedback on them.
> 
> 1) Radio number 1 is working nominally it seems.  I had one issue with
> it in the past never resolved, and I'm not sure if it's really an
> issue so I thought I'd ask before starting to reacquaint myself with
> the large pile of documentation here.
> 
> The radio has what I think is a very high IF noise level.  RF gain,
> AGC, sensitivity all good, but the IF hiss is making me a little
> crazy.  Is that possibly just a characteristic of the radio, or a hint
> that of someone's tryed to hot rod the radio, perhaps, and that I need
> to look for a mod to reverse?

*** I noticed something like that.  Maybe.  Listening to a signal - all 
the band noise -
I start turning the RF gain down.  To a certain extent, as I turn it 
down, the band noise gets less while the signal
stays the same!  So maybe the "band noise" is generated inside the 
radio?  Also the SSB voice I'm listening too
sounds harsh at full RF gain.  Turn it down, and the voice gets 
smoother.

   Right now, I have bigger ( transmitter ) fish to fry.

                - Jerry, KF6VB