An easy way to get signals from a radio when you don't have access to a
schematic is to open the lead to the LED on the radio you are trying to use and
put the diode of an opto isolator in series with the existing LED. The
transistor portion of the opto isolator can then be used to input the COS of a
controller.
I have used this method several times and find it to be the least intrusive
interface to a radio with unknown circuitry while providing a completely
isolated signal output.
73 - Jim W5ZIT
Robert Pease <[EMAIL PROTECTED]> wrote:
I am having trouble sensing the lights and activating alarm inputs on the
controller, hence the need for the way to send test alerts...with the service
monitor connected directly to the reciever of course!!
I saw a note about a sets sound file being available, can someone tell me off
list where I can get it
Thanks again. Rob. KS4EC
