Have a set of 900 mhz headphones and do not hear anything around the
Jupiter.. But I must turn my GE 900mhz telephone off to get the ticking
out of the phones from that cordless telephone, the Jupiter is clean..
Thanks and 73's,
Dudley
WA5QPZ
jhurry@austin.rr.com
----- Original Message -----
From: "Ken Hopper" <khopper@uchicago.edu>
To: "Dan Collins KZ5X" <KZ5X@ev1.net>; "tentec" <tentec@contesting.com>
Sent: Wednesday, April 17, 2002 8:40 AM
Subject: [TenTec] Re: Clicking noise in Jupiter rx audio
> 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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