I have had my KPA500 for around 5 years. I frequently feed through 200w from my TS990S.
I have also accidentally abused it many times by putting 100w or more into it or using the wrong antenna or some such operator error. It has always just faulted appropriately and come back up smiling. It is a tough little cookie ! Barry VK2BJ Sent from my iPad > On 1 Mar 2019, at 06:12, Bob McGraw K4TAX <rmcg...@blomand.net> wrote: > > Yes, improperly or incorrectly using ALC with any amp or any transceiver, for > that matter, can and usually does produce distortion and splatter. Just > look at some of the signals on the bands and observe the ALC overshoot which > exists with many radios. And it is made worse by the addition of an > amplifier in line. It isn't pretty!. Yet it has little impact on the on > frequency signal as heard and thus the "great signal" complements follow. But > look at the other factors where you will find "NOT so great signal". These > points should be addressed as well. > > 73 > > Bob, K4TAX > > >> On 2/28/2019 1:04 PM, j...@kk9a.com wrote: >> I have not used ALC with any amplifier since transceivers switched to >> transistor finals. From what I have read on this list, using ALC improperly >> can cause distortion. Just be very careful with your drive level. I believe >> that the KPA500 can handle 100 watts in bypass, 200 watts may be pushing it. >> The KPA500 is a very nice amp and it is easy to use with any transceiver. >> >> GL, >> John KK9A >> >> >> JIM LAGESON N0UR wrote >> _Thu Feb 28 13:07:27 EST 2019_ >> >> >> ------------------------- >> >> I have never owned an amp before and recently put together a KPA500. All >> seems to be working well, but I have a few questions. I am using with a >> IC-7300. >> >> How important is the ALC cable? I notice it is not included in the Basic >> Cabling Diagram in the manual but is discussed later in the manual. >> >> If I were accidently to run 100 watts into the KPA500 will the PWRIN HI >> Hard Fault/STBY protect itself before any damage is done. Would ALC protect >> me from that? >> >> Is it standard procedure to keep the KPA500 in line when turned off and not >> in use? I see you may run up to 200 through the KPA500 in STBY. >> >> Is there any concerns or settings on radio when running full break in on CW? >> >> Thanks >> Jim-N0UR >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
