Great Idea, almost makes too much sense! Rob
--- In Repeater-Builder@yahoogroups.com, Jim Brown <[EMAIL PROTECTED]> wrote: > > 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 >
