¿ªÔÆÌåÓý

  1. Repeater-Builder
  2. Messages
Single Messages Topics Expanded Polls

Re: Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?

 

Hi folks,
Just another note about using mobile radios in a repeater. Yes, their IFs were wide (stagger-tuned) to allow good function across the band coverage.
However, since in single-frequency repeater use, all that is needed is to sharpen the tuning to greatly improve selectivity and sensitivity. Same with the front end.
Thoughts?
Frank N6CES

On Tue, Jan 19, 2021, 3:21 AM peter oesterle <phoesterle@...> wrote:
roger that .
The old? IF? filters were wide.

From: [email protected] <[email protected]> on behalf of SRG <srg734@...>
Sent: Tuesday, January 19, 2021 3:53 AM
To: [email protected] <[email protected]>
Subject: Re: [repeater-builder] Why use a purpose built repeater box as a repeater rather than a transmitter, receiver, and controller tied (lashed) together?
?
Peter, Be careful on those old radios you mentioned. While I built many "IC-20" repeaters in the '70s that was when we had 30 KHz spacing between slots and they worked well. Presently, that won't work very well in a populated area with 20 KHz (or less-scary thought) spacing of repeater pairs. To get around that you could change out the IF filter as a bare minimum.? And, if you are in some third-world county with little to no repeaters around that may work.?
--
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
-

Join [email protected] to automatically receive all group messages.