Thanks Mark... this looks like precisely what would solve the problem. I did
this kind of mod on my old TS-530, long ago, feeding the rx antenna to an
R71a to make use of the R71's rtty and cw filters.
Two questions: 1. Would I not have to put a spdt switch in that line to keep
from feeding the sig to both receivers at the same time? 2.) when you refer
to the 'gotcha', do you mean if the jupe and the 920 are on different bands?
If so, that wouldn't be a problem for me as I rarely have had occasion to do
crossband work. Mostly, I'm running cw with the rx and tx on the same band
at power levels of around 50w.
73' Jerome - VA7VV
----- Original Message -----
From: "Mark Erbaugh" <mark@microenh.com>
To: <tentec@contesting.com>
Sent: Friday, September 17, 2004 12:35 PM
Subject: Re: [TenTec] jupiter tx / ft920 rx
> Jerome,
>
> Check out http://kd4dcy.net/jupiter/mod_ifout/mod_ifout.shtml This page
> shows a modification to bring the 12 kHz IF signal out from the Jupiter's
> receiver to the SPARE phono jack on the rear panel. If you open you
Jupiter
> and find that Receiver board, you will see that one of the pins on one of
> the connectors at the edge of the board (not the connector that has the 12
> kHz IF shown in the pics) is labelled Rx Ant. You can run some mini coax
> from the SPARE jack to this connector to create an Rx antenna output for
the
> Jupiter which you could feed to the Rx input of the 920. This signal is
> isolated from the Jupiter's Tx RF. The only little gotcha is that this is
> located after the Jupiter's low pass input filtering, so it won't work
well
> if you are on different bands. Maybe someone else can find a better
picture
> of the mod for you. This Rx antenna mod is pretty common.
>
> 73,
> Mark
>
> ----- Original Message -----
> From: "jerome schatten" <romers@shaw.ca>
> To: <tentec@contesting.com>
> Sent: Friday, September 17, 2004 1:56 PM
> Subject: [TenTec] jupiter tx / ft920 rx
>
>
> > I live in a very noisy environment with regards to powerline noise. I
find
> > the jupe's noise blanker and noise reduction system totally unable to
cope
> > with anything but ignition noise and not very well at that. My ft920's
> > ability to receive well under harsh noise conditions is more than
> > satisfactory. When the noise is not too severe I prefer the jupe; tx and
> rx.
> >
> > I would like to be able to use a single antenna and have the jupe tx and
> the
> > 920 rx. I can do the opposite with no problem... 920 tx, jupe rx as the
> 920
> > has an rx output that allows a separate receiving antenna to be used.
> >
> > The ft920's keying is mushy soft on make; the sidetone has nothing to do
> > with what goes out on the air and the qsk is unspeakably vile, else I
> would
> > just use the 920 under difficult noise conditions.
> >
> > I would appreciate suggestions as to how to use the jupe tx / 920 rx
> > hopefully retaining the jupe's excellent qsk.
> >
> > Jerome - VA7VV
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
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