after i wrote to the list i did a quick search on google.
I looked at various multi cupplers, and most of the ones i saw were for
recieve only.
not bad pricing, you can get 4 port multi cupplers for decent prices, but
they either didn't say, or specifically said they were not meant for high
level RF input.
but if there are such devices ide like to find one.
I know there has to be for commercial repeaters, and if so, then they'll be
on ebay at probably relatively ham operator prices.
73
Colin, V A6BKX
----- Original Message -----
From: "Frederick" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, December 19, 2007 5:01 PM
Subject: Re: multiple radios, one antenna
> Hi
> Yes, they do make such a device called a duplexer or malty plexer.
> Usually expensive but sometimes well worth the money. I used to own one
but
> never used it in the shack. I am sure others on the list can tell you much
> more.
>
> God bless,
> Mark
> God loves you!
> My ham radio lists.
> http://lists.topica.com/lists/funhamradio.
> http://groups.google.com/group/funhamradio-list
> ----- Original Message -----
> From: "Colin McDonald" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, December 19, 2007 3:53 PM
> Subject: multiple radios, one antenna
>
>
> > here is a question for the list:
> > I want to have my main VHF/UHF transceiver hooked up to my single dual
> > bander, while at the same time using that same dual band antenna for
> > another
> > transceiver and a scanner at the same time.
> > I don't want to have to manually switch the antenna over to the
different
> > radios via an antenna switch.
> > What i need is some sort of distribution device that will allow me to
> > transmit on either of the VHF and or UHF radios, without damaging either
> > the
> > other transceiver or the scanner. And then when there is no rf being
> > transmitted, to be able to have all 3 receive properly using the one
> > antenna.
> > My question is, is there such a device availible?
> > I know about distribution amplifiers for receive, but i don't know if
you
> > can transmit through those, and i also need something that will prohibit
> > any
> > rf getting back into the other radios.
> > I know that any receiver that is on the same band will be desensatized
as
> > soon as I transmit, but i am not concerned about that since if i were
> > using
> > a separate antenna, that would occur in the near field anyway.
> > I require such a device because i can only really have one good dual
band
> > antenna at any height and i have several different rigs i want to be
able
> > to
> > use to monitor and transmit on, as well as listen on the scanner.
> > I know that in multi-frequency systems, such as a public safety
> > organization, or even public transit, they often have multiple radios on
> > the
> > same band going at the same time for dispatch or communications
purposes,
> > all using the same antenna....i suspect they use some sort of tuned
> > cavities
> > to prevent desensatization...
> > I need a little box that i can plug my antenna into, and plug 3 radios
> > into
> > the other side and not worry about my 50 watts of rf on VHF getting back
> > into the antenna jack of the other radios and blowing out the front
ends.
> > any help is appreciated in finding a solution to my wishes.
> >
> > 73
> > Colin, V A6BKX
> >
> >
> >
>
>
>
> --
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>
>
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