Hi Eric, That is what I hoped to hear. I also had a response off list from a dedicated tester who "tested" this. It is good to know there is a good chance of surviving an occasional oops.
73, Chuck, W5UXH Eric Swartz - WA6HHQ, Elecraft wrote: > > Hi Chuck, > > We immediately protect the amp by going into bypass mode. The > microprocessor detects the extreme SWR event and immediately routes the > drive signal around the amp, initially though the diodes, and then > through the bypass relay after it has switched. This happens in a few > milliseconds. > > While I do not recommend this as a normal operation test, we even have > pulled the coax out of the dummy load at 500W during tx to test this, > with no ill effects. (If you were at our contest university demo in > Italy, you may know how I know this.. ;-) > > We have not been able to kill the t/r diodes during lab destructive > testing or in on-air operation. > > 73, Eric WA6HHQ > -- View this message in context: http://elecraft.365791.n2.nabble.com/QRO-KPA500-PIN-diodes-High-SWR-tp6307781p6307820.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
