>
>
>> greenfin2002 wrote:
>>
>> am using a 440 hub repeater to link 2 vhf repeaters. everything
>> worked except the normal squelch crash. i then added audio delay
>> boards to fix this now when i unkey from vhf repeaters i hear an
>> echo. usally the last 2 or 3 letters of the last word that was
>> spoken. looking for ideas.
>> thanks pat
>
>
> What kink of repeaters?
> What kind of controllers?
> Are you using PL (ctcss)?
> If you are using PL, are you "and squelch" gating the audio? (you may
> not know the answer to this)
>
> Kevin
greenfin2002 wrote:
>cat and arcom controllers using pls on recieve on all 3 repeaters pl encode on
>hub and pl recieve on one link radio and one link radio does not as it does
>not decode-kenwood g707. the machines are maggiore. cat 300dxl is hub
>controller. pat
>
It appears that you are hearing the compounding delay of the audio as it
propagates through more than one repeater (the link and the hub).
If your delays have programmable time, try using the shortest delay you
can, everywhere.
The best thing would be to add a faster carrier squelch to the Maggiore
repeater and insure the controllers are processing the receivers COS and
PL logic as "AND Squelch". The utilization of the RLC-MOT carrier
squelch board would insure the fastest squelch on signals above about 20
dB C/N (generally good), and using a small amount of delay would
completely eliminate any squelch crash during normal good quieting
transmissions.
The problem is likely the Maggiore has a long carrier squelch time
constant, and you are having to use a lengthy delay time to compensate
for it.
Hope this helps...
Kevin
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