I've been following this thread with interest. I have a K3 and an Alpha 8100. The 8100 uses a pair of Pentodes fed through a swamped grid. I believe the Alpha 99 does as well. I think this is why Merv and I have never seen issues involving the coax length.
For the record, the Alpha manual for the 8100 does state to NOT use a tuner in the exciter. On 8/22/2012 7:10 PM, Merv Schweigert wrote: > I use a 99 with the K3 and any length coax works just fine, it there is > SWR on the > line there is a problem someplace, have never had to cut a coax to any > particular > length. > If theres SWR its either a ground differential problem between the amp > and radio chassis or the > tuned input is not correct, or the amps input resistor has been cooked. > Merv K9FD/KH6 >> On Aug 22, 2012, at 1:01 PM, Jim Brown<[email protected]> wrote: >> >> >>> You >>> might try engaging the auto tuner in the K3 if you have one. >>> >> Be aware that both the Alpha 87A and 99 manuals tell you "NEVER use an >> automatic antenna tuner into or through the [87A or 99]. This will cause >> damage to the Input Wattmeter& Input Relay." >> >> It's largely because of this prohibition that I don't even have a KAT3 in my >> K3. >> >> Bud, W2RU >> ______________________________________________________________ >> 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 >> . >> >> > ______________________________________________________________ > 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 > -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org ************************************************ ______________________________________________________________ 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
