Trancievers in general

[news.xtra.co.nz]

How do trancievers transmit and recieve on the same aerial without
absolutely swamping themsleves? Is it just good old tuning, or is the more
of a trick to it?

Thanks,
Robert, the prolific poster

 

[Don Pearce]

How do trancievers transmit and recieve on the same aerial without
absolutely swamping themsleves? Is it just good old tuning, or is the more
of a trick to it?

Thanks,
Robert, the prolific poster

Either by using different frequencies and good diplexing filters, or
not doing both at the same time.

d

_____________________________

http://www.pearce.uk.com

 

[Active8]

Either by using different frequencies and good diplexing filters, or
not doing both at the same time.

yup. the latter is accomplished with a Tx/Rx switch which can be a diode
setup in the simplest case or a spark gap in a waveguide, which is
really pretty simple, too. coax relays can be used. what else?

mike

 

[Dr. Anton Squeegee]

How do trancievers transmit and recieve on the same aerial without
absolutely swamping themsleves? Is it just good old tuning, or is the more
of a trick to it?

First off: It's 'transceiver.' ;-)

Second, there's a wonderful little device involved called a
duplexer. It consists of a number of tuned resonant cavities that do a
pass/reject number on the appropriate frequencies. The book "FM and
Repeaters for the Radio Amateur" has a nice description of them, and
there are likely other books that describe them in nauseating detail.

The simple version is that two cables go in (transmitter &
receiver), and only one comes out (the antenna).

Keep the peace(es).