Hm, I wonder if the KPA500 has or can have provision for this. That amp can be driven to full output by 30 watts or so, IIRC. With the K3 (or K2), power control could be done automatically by having the amp tell the radio that it's active over the serial interface, but it's clear the KPA500 has much provision for being used with radios other than the K3.
73, doug From: Alan Bloom <[email protected]> Date: Wed, 21 Apr 2010 10:32:18 -0700 On Wed, 2010-04-21 at 12:23 -0400, Tom W8JI wrote: > The correct approach would be an > attenuator pad so the radio could run at near full power and > not have a chance of overdriving the amp, ... I don't understand why more people don't do that. For example, a 3 dB attenuator between the transceiver and amplifier ensures that a 100W exciter won't overdrive an amplifier that requires 50W of drive. The 3 dB loss on receive is hardly ever an issue but if you're worried about it, just put the attenuator inside the amplifier, after the T/R relay. Seems like a simple, foolproof solution. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
