[Boatanchors] Re: [heathkit-yahoo] HW-101 Tx way off from RX VFO

[Boatanchor at alliedinformation.com]

Yes, I neutralized the finals, but I may go ahead and do it again just to 
make sure.

Matt, KB8WFH


At 04:35 PM 5/24/2005, ma.locksmith at juno.com wrote:
>Your output tubes are oscillating....
>
>Have you completed the neutralization procedure?
>
>Ed
>
>On Tue, 24 May 2005 20:10:23 -0000 "kb8wfh"
><boatanchor at alliedinformation.com> writes:
> > I am working on an HW-101 with a strange problem.
> >
> > I have aligned the receiver and it works fine. I can hear signals
> > where they are supposed to be.
> >
> > However, when I try and transmit, I get an output carrier WAY out
> > of
> > range of where the VFO is set. Even if I set the rig in TUNE mode
> > and
> > change the VFO while its sending out the carrier, the output
> > frequency
> > never changes.
> >
> > First, I set my VFO to 14.295. I hear a signal generated by my
> > signal
> > generator at 14.295 (give or take a few cycles). Then I move the
> > mode
> > switch to Tune. My frequency counter reports the output at 14.433.
> > It
> > stays stable at that frequency even if I change the VFO.
> >
> > Then, I tune the VFO to 7.295. I hear a signal generated by my
> > signal
> > generator at 7.295 (give or take a few cycles). Then I move the
> > mode
> > switch to Tune. My frequency counter reports the output at 14.060.
> > After a few seconds, the frequency counter starts climbing back
> > down
> > closer to my VFO frequency. When it gets close, the circuit breaker
> > on
> > my power supply trips. Huh?
> >
> > 15 meters seems to be pretty close to where the VFO is, but no
> > exactly. I get NO output on 80 or 10 meters at all, but that may be
> > a
> > separate problem.
> >
> > I have also just noticed these result are achieved with the bottom
> > cover place over the band switch removed. If I put it back on, I
> > get
> > no output from 40 meters. put it on, it works fine.
> >
> > Why is the VFO working on receive but so far off on transmit? Any
> > other comments or places to test and try?
> >
> > Thanks.
> >
> > Matt, KB8WFH
> >
> >
> >
> >
> > Heathkit at yahoogroups.com exists to promote
> > discussions/selling/buying
> >  and maintaining of Heathkits among its 825 members (as of
> > 05/03/05),
> >  which also includes a number ex-heath employees).
> >  Heathkit Ham, Test, Audio, RC, Automotive subjects are welcome.
> >  Pictures/attachments to e-mail are not permitted due to virus's,
> >  so please post them to a website or send them direct to the group
> >  member, and auction items are always WELCOME to be mentioned.
> >  Other Reflector (E-Mailers) that you might wish to know about
> >  and join are listed here on this webpage:
> >  http://www.myheathkits.com/ws/reflectors-lists.htm
> > Yahoo! Groups Links
> >
> > <*> To visit your group on the web, go to:
> >     http://groups.yahoo.com/group/heathkit/
> >
> > <*> To unsubscribe from this group, send an email to:
> >     heathkit-unsubscribe at yahoogroups.com
> >
> > <*> Your use of Yahoo! Groups is subject to:
> >     http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
> >