Geoff.. That's almost the scenario. The GE BT-20-A has a mechanical 3 second (adjustable) overload relay that holds B+ on for 3 seconds if AC power to the transmitter is interrupted for a second or so (actually 3 seconds) by lightning or such. It prevents having to go through the 30 second warm up required when the transmitter is first powered on or power is temporarily lost. The relay in circuit at this time works, but it uses a gear and clicker mechanism to achieve the 3 second delay and it is quite noisy. Of course, it was not designed for use with PTT keying and would likely not hold up to the constant on/off caused by such. The way the power around here flashes on and off it will be a welcome feature! I will likely set it for about a second or second and a half delay.
Thanks, Rick/K5IAR Depends on where in the circuit is needed. I'm guessing that the 120v AC relay, that's active as long as you're transmitting, is making the transmitter come on, or go off. Either way, a millisecond or two is about all you need, and quite negligible. Just make sure you have enough capacitor to discharge the resulting spark of Back EMF from the contacts, when the relay is actuated. -- 73 = Best Regards, -Geoff/W5OMR ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
