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Re: [CQ-Contest] SO2R Hardware Question

To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] SO2R Hardware Question
From: Tom Hellem <tom.hellem@gmail.com>
Date: Sat, 16 Dec 2017 18:03:35 -0700
List-post: <mailto:cq-contest@contesting.com>
Possibly he has two old radios with only 1 VFO each that he wants to RX
with?
If that was the case, could he not simply remove the antenna from the other
radio
with a switch whenever one of the radios is transmitting?

K0SN

On Fri, Dec 15, 2017 at 7:09 AM, ve4xt@mymts.net <ve4xt@mymts.net> wrote:

> I, too, am entirely confused by the question. If you want to just work
> split, that's what two VFOs are for.
>
> SO2R is nothing like John's question.
>
> 73, kelly, ve4xt
>
> Sent from my iPad
>
> > On Dec 14, 2017, at 15:35, Mike Smith VE9AA <ve9aa@nbnet.nb.ca> wrote:
> >
> > Hi John,
> >
> >
> >
> > I am not sure what you are trying to accomplish, but at first thought,
> > however you will achieve it will most likely be extremely complicated (if
> > not impossible)
> >
> > and costly.
> >
> > As soon as you transmit on radio #1, you'll fry the front end of radio
> > #1...maybe even if they were on different antennas !
> >
> > What you probably want is a single radio with 2 RX cards. (like a K3 for
> > example)
> >
> > I don't know that you can (easily) achieve this with 1 antenna and 2
> radios
> > on the same band.  All the filtering in the world won't help if you are
> > transmitting 1kc away from your rx freq. and your radios are tied to the
> > same antenna (that's not normally what SO2R is all about.usually that
> means
> > 2 signals, flip flopping on different bands with different antennas (or a
> > triplexer))
> >
> >
> >
> > All that being said, maybe there is a way...and perhaps it's staring me
> > right in the face, but I've never done it.
> >
> >
> >
> > Not much help - sorry L
> >
> >
> >
> > GL !
> >
> >
> >
> > 73 de Mike VE9AA..SO2R
> >
> > ----------------------------------
> >
> >
> >
> > I have 2 radios that I would like to be able to use in dual receive mode,
> >
> > meaning I can listen to both at the same time.  They would be using 1
> >
> > antenna, and only one radio would be used for transmitting.  I would like
> >
> > to be able to use both on the same band for split frequency DX pileups.
> >
> >
> >
> > What sort of SO2R interface do I need to accomplish this?
> >
> >
> >
> > 73 John AF5CC
> >
> >
> >
> > Mike, Coreen & Corey
> >
> > Keswick Ridge, NB
> >
> >
> >
> > _______________________________________________
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> > CQ-Contest@contesting.com
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>
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