[Asterisk-Users] Re: FRS over *

[James Taylor]

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 at 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