If what you are trying to get is a stronger signal from a weaker one,
use an open npn collector as the switch - in order for it to trigger
with reliability you do need for the signal to go above 3 and below 2
volts for this to occur - it takes the strain off the radio electronics
and you can also add a LED to help troubleshooting in the future again
without loading the radio set. Search at the repeater builder web site
for ideas on enhancing the basic idea, there is loads of good info
there.
Mathew Quaife wrote:
>
Snip --> Then we used a
> COR, which actually is nothing more than a voltage drop. For what ever
> reason, this voltage does not drop enough to key the transmitter in the RLC
> controllers, at which time I attempted the switch was using and RLC4. At
> this time I do not want to use a PL deck on it, which would take care of the
> core problem, but then limits the open repeater. Other bad part of this is,
> I have not worked with electronics, or done any service work for about 15
> yrs, as I took a career change to the medical field. So most of what I had
> learned, due to that CRS thing that comes with age, is gone.
--
73...Clark Beckman N8PZD
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