I live in AZ so I know what UV does. What I don't yet know is if the KAT500 is smart enough to inhibit tuning with an input power level high enough to damage the L C switching relays.
If the answer is no then the obvious follow up is - why not? if the answer is yes then a keying inhibit is not needed to protect the KAT500. Andy, k3wyc ________________________________ From: Jack Brindle <jackbrin...@me.com> Sent: Saturday, November 3, 2018 12:58 PM To: ANDY DURBIN Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 as a remote-controlled tuner The keying interrupt must be provided by the ATU in order to avoid hot switching the ATU relays when it tunes. This cannot be determined anywhere but in the ATU, thus it must provide the break. That key line break is pretty important to the life of the ATU. Jack, W6FB > On Nov 3, 2018, at 12:17 PM, ANDY DURBIN <a.dur...@msn.com> wrote: > > "Someone asked me recently whether a KAT500 could be remote-controlled" > > > It wasn't me that asked but I have been considering using the KAT500 as a > remote tuner as I need higher power capability than my current MFJ-993BRT. > However, my approach was going to be to buy just the KAT500 board and > find/build a suitable enclosure. I'm a bit surprised Elecraft does not offer > the KAT500 board packaged as a weather resistant remote tuner. > > > As to needing AUX cable and keying interrupt - > > > - KAT500 does not need AUX cable to operate but if you want to help it > along it's far better to give it the TX exact frequency rather than just the > band. > > - What other remote tuners provide keying interrupt? In any event, the > SWR seen at the remote tuner could be quite different from the SWR seen at > the amplifier and may not be a good indication of whether the amp should be > keyed. > > > The keying interrupt should be based on SWR seen at the amplifier output. I > actually already have that wired using my LP100A. > > > 73, > > Andy k3wyc > ______________________________________________________________ > 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 > Message delivered to jackbrin...@me.com ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
