[AMRadio] DX100B oscillation problem

wb3fau at att.net wb3fau at att.net
Wed Dec 7 19:46:09 EST 2011


Rick, did this problem start  when you  discovered the shorted  1625?  I  agree with the guys on  problem being in the  mod. section.   A  shorted  1625?  thats a  rare  happening.  Try  some of the sugestions and let us  know what   happens...Russ.

--- On Wed, 12/7/11, Rick Poole <wa1rkt at arrl.net> wrote:

> From: Rick Poole <wa1rkt at arrl.net>
> Subject: Re: [AMRadio] DX100B oscillation problem
> To: amradio at mailman.qth.net
> Date: Wednesday, December 7, 2011, 1:21 PM
> At 12:46 PM 12/7/2011, JAMES HANLON
> wrote:
> 
>  >>>>>
> >If you suspect that your oscillation problem may be
> coming from the 
> >audio/modulator chain, just pull out the 1625 modulator
> tubes and 
> >see if that stops it.
> <<<<<
> 
> I actually ran it that way for a few days after one of the
> modulator 
> tubes developed a short.  I tried it again yesterday,
> but the problem 
> is happening occasionally in CW also (not as often as with
> phone).
> 
> I do have a couple of good lab scopes... my scopes are
> better than my 
> ears are.  :-)
> 
> Thanks...
> 
> Rick WA1RKT
> 
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