Carl is correct. Not an uncommon problem. With my Omni VI+ and the
Tentec psu on the left side of the radio I have a slight hum on the SSB
audio. With the psu on the right side......no problem.
73
Bob K4TAX
Carl Moreschi wrote:
>
> I just have to say that it is a known problem that if the pegasus or jupiter
> is too close to the power supply, a 60 hertz component gets modulated on
> the CW carrier producing a raspy CW note. You must keep the power
> supply at least 2 feet from the transceiver. The problem is not RF getting
> into the transceiver, it is caused by the magnetic lines of force from the
> power
> supply transformer modulating the oscillators in the transceiver.
>
> I have had several hams listen to my pegasus CW note and all say it
> sounds great.
>
> I wonder if the ARRL test had the power supply near the pegasus.
>
> Carl Moreschi N4PY
> Franklinton, North Carolina
> n4py@earthlink.net
> ----- Original Message -----
> From: "David McClafferty" <at060@chebucto.ns.ca>
> To: "Paul Christensen" <paulc@mediaone.net>
> Cc: "Tentec Users Reflector" <tentec@contesting.com>
> Sent: Sunday, March 04, 2001 4:53 PM
> Subject: Re: [TenTec] Jupiter & Pegasus CW note
>
> >
> >
> >
> > On Sat, 3 Mar 2001, Paul Christensen wrote:
> >
> > >
> > > It's unlikely you'll see anything abnormal with an audio spectrum
> analyzer.
> > >
> > Sorry I should have said I was using an RF spectrum analyzer. It is a
> > homebrew analyzer that was described in QST some years back. I built it up
> > from an A&A Engineering kit. BTW it is for sale along with a Tektronix 902
> > diplay unit (scope). A spare scope tube, two spare Jerrold TV converters
> > (used in the Spec. Analyzer) for $400.00 Canadian, if anyone is
> > interested.
> >
> > 73, Dave. VE1ADH
> >
> >
> >
> > --
> > FAQ on WWW: http://www.contesting.com/FAQ/tentec
> > Submissions: tentec@contesting.com
> > Administrative requests: tentec-REQUEST@contesting.com
> > Problems: owner-tentec@contesting.com
> >
> >
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/tentec
> Submissions: tentec@contesting.com
> Administrative requests: tentec-REQUEST@contesting.com
> Problems: owner-tentec@contesting.com
--
FAQ on WWW: http://www.contesting.com/FAQ/tentec
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
|