Yes Dan, I can hear a very rapid and sustained change in the ticking with I
rotate any of the knobs on the front of the rig or select the menu. Especially
bandwidth, multi, and RF/AF gain and keyer speed. There is a higher pitched
whine like an alternator in an old car :-)
Oh well... just one of those things we learn to live with. Like my old Sales
Manager told a client "that's a feature that we added at no charge" hihihihi
dit dit
de ken n9vv
Dan Collins KZ5X wrote:
>
> Thanks Ken. My symptoms sound very much like what you describe. I don't
> have any wireless stuff near the shack other than a cordless phone, but his
> occurs when it is on the hook.
> Here are a couple of other clues:
> Noise does stop when I shift the Jupiter into its "menu" mode, so may be
> related to display circuitry (?).
> Just realized that it is also correlated to band: some noise on 10, some
> more on 12, lots on 15, little on 20 and lower.
> Any suggestions appreciated.
>
> Dan
>
> ----- Original Message -----
> From: Ken Hopper <khopper@uchicago.edu>
> To: <KZ5X@mail.ev1.net>; tentec <tentec@contesting.com>
> Sent: Tuesday, April 16, 2002 18:58
> Subject: re: Clicking noise in Jupiter rx audio
>
> > I disagree those who say the ticking is generated outside the JUPITER.
> >
> > Several months ago I installed a Jensen Linx J120 wireless headphone
> > interface. I never heard the clicking in the JUPITER audio chain with
> speaker
> > or headphones, but now with the wireless headset I can orient the 900Mhz
> > xmitter under and around the JUPITER cabinet and the ticking/clicking is
> > definitely coming from the JUPITER. I have used toroids on all the
> wireless
> > xmitter lines only limited success. The source seems to flow down the
> audio
> > line from the JUPITER.
> >
> > I have an external LDG AT11-MP (because my SWR is different on CW and
> SSB
> > with the INTERNAL tuner) and I have powered it down with NO change in the
> > constant (annoying) ticking.
> > I do not believe it is the internal tuner, because the ticking was
> there
> > 5 months ago when I got the wireless interface. My Internal tuner is
> turned
> > OFF at this time.
> >
> > Solution at N9VV was to move the 900Mhz xmitter far enough away from
> the
> > JUPITER cabinet (2 feet) so that it doesn't pick up the tick.
> >
> > dit dit
> > de ken n9vv
> > http://www.n9vv.com
> >
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