Re: [TenTec] 544 freq display jumping on TX

[N1SW <n1sw@cox.net>]

Phil Chambley, Sr. wrote:

> If it isn't changing freq, rule out about everything you mentioned.  Check
> out the display board and reseat the connectors, tighten screws, etc.
>
> Phil C.
> K4DPK
> ----- Original Message ----- 
> From: "Adam N." <adam2@n4ekv.com>
> To: <tentec@contesting.com>
> Sent: Tuesday, November 02, 2004 5:27 PM
> Subject: [TenTec] 544 freq display jumping on TX
>
>
>  
>
> > I have a nice 544 that has a problem where the freq readout jumps around
> > while transmitting on some bands (15m comes to mind).  It does not seem
> > to be changing my actual output freq.
> >
> > When I use the remote VFO (for TX and RX) the problem stops.
> >
> > I've read through the archives on this reflector at some possible causes
> > (PTO rebuild, dirty band switch, unstable osc) but I'm not sure which to
> > attach first.
> >
> > Thanks in advance.
> >
> >
> > 73,
> >
> > Adam N.
> > N4EKV
> > Oakland, CA
> > www.n4ekv.com
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
> >    
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>  
Try differnet grounding schemes for the rig.  It souds like you are 
geting some stray RF back into the radio.  To prove it,  lower the power 
output and see if it stops.  If it does bring the RF up slowly and see 
if it returns when yo approach full power.
N1SW