I haven't seen any "duplex" handhelds that I can remember (ther
must be
some).
The repeater would most likely be "duplex". Many repeaters are built
from
either two under-dash mobile radios or the old GE MasterII units
The question you really want to ask is if they can operate on different
transmit and receive frequencies. This is normally referred to as
"semi-duplex".
http://www.shipmanenterprises.com/freetalk-xl.htm
http://www.antennasystems.com/midland_radio.html
I've looked at the dingotel & 446 stuff.
Looks like you just need a handheld with a good VOX.
And, since GMRS regs allow "wireline control", I suppose that as long
as
you never got to the PSTN, you would be ok. Read the regs and decide for
yourself.
James Taylor
On Tue, 01 Mar 2005 09:52:37 -0800, TC <trclark@shaw.ca> wrote:
> heya David ( Josephson ) :)
>> Only one brand of cheap GMRS radios that I've seen (Garmin) has the
>> duplex mode that allows use with repeaters and duplex base stations. I
>> think this is essential for successful integration with a phone system.
> so i check 2-way radio on the garmin site
> http://www.garmin.com/outdoor/products.html#2-way
> http://www.garmin.com/products/rino/
> http://www.garmin.com/products/rino120
> http://www.garmin.com/products/rino130
>
> I phones tech support & they claim in gmrs mode and frs mode these
radio
> are not duplex...
> did you have some more info here is thre some other garmin product you
> are
> using ?
>
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--
James Taylor
3505 Summerhll Road
Suite 11
Texarkana, Texas 75503
903-793-1953