do you have access to both sides of the mw circuit?  i'm curious why 
they have a 4w/4w repeater in the loop (should be enough gain from 
the channel, unless it's a carbon mike input ;-) is it being used as 
a two way link? or more likely one way (receiver at one location to 
transmitter at another location.

you should be able to use an "out-of-band" controller too (it uses 
3500 Hz "mark busy" instead of the 2600 Hz "in-band")  look for 
"remote base" controllers/ interfaces.  

hams invented this stuff, they can make a simple 2600 Hz "decoder" 
using 88 mH loading coils, a 4046 pll or a 567 pll to detect the 
tone.  also the original wescom stuff was built like the proverbial 
brick outhouse and should be repairable.  (unless the place burned 
to the ground)

-larry

   


5/17/05 10:20:49 AM, Donald Ritchie <[EMAIL PROTECTED]> wrote:

>While this is not a telephone app. it does use telephone equipment.
>
>The circuit is to a remote amateur radio repeater, and uses a "donated" 
>channel from a microwave system.
>The receive side, in an idle condition, receives 2600 Hz, when the 2600 
>is removed the transmitter is keyed.
>The current equipment is  a wescom 7279-44 4W to 4W repeater and a 
>7280-00 SF to E&M converter.
>Looking for replacements NOT MADE OF GOLD, or another alternative.
>
>Thanks
>
>Don Ritchie Century Communications  Euclid, Ohio  K8ZGW  




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