I never heard of the idea of full duplex on repeaters. As far as I know,
most rigs we use to talk on don't support it either, I know my th-f6a mutes
the receiver when you talk, oh, wait a minute, I don't think you could do
full duplex because both people would be transmitting on the same frequency
and doubling.

----- Original Message -----
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, June 14, 2005 7:38 PM
Subject: Re: repeaters


> a repeater is, just that, a station that takes a signal and repeats that
> signal on another frequency...usually these repeaters have large antennas
> that are mounted high up on towers so that they can receive signals over a
> very wide area, and so that they can  retransmit those signals over the
same
> broad area.
> If you have a scanner and program in 2 meter amateur frequencies, most of
> them will be repeaters which have an input frequency which they listen and
> receive on and an output frequency which they transmit the signal out on.
> These repeaters systems are commonly used throughout the radio world for
> communications over a wider area instead of the relatively localized
ability
> of simplex for large areas.
> What is simplex? it is a method of communication where both persons who
talk
> back and forth on their radios are transmitting and receiving, not at the
> same time, on the same frequency...ultimately, a repeater allows for 2
> people to talk back and forth the same as you can on a telephone without
> having to stop transmitting to listen to the other station.
> However, most repeaters are semi-duplex, this means only one person can
talk
> at one time and they must stop transmitting to listen to the other station
> transmitting.
> As i said, the whole point of a repeater is so that one centralized high
> powered transmitter, and a very very sensative receiver can be put up with
a
> high gain very sensative antenna with allot of height, which will serve a
> wide area so that Hams may communicate to other hams relatively long
> distances  away without having to have the large antenna systems and the
> expensive sensative radio equipment....
> hope that helps you to understand a bit better.
>
> You of course need to be a licensed ham to talk on an amateur repeater.
> 73
> Colin, V A6BKX
> ----- Original Message -----
> From: "tomi" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, June 14, 2005 3:07 PM
> Subject: repeaters
>
>
> > Hi, I have heard and read about these thingsyou guiseuse called
repeaters.
> > How do they work and how can you get on one?
> >
> > regards: Tomi
> >
>