On 9/4/2012 8:29 AM, Thomas Horsten wrote: > I am wondering if anyone knows how the KXPA500 signals its state to > the K3.
Per previous information, proprietary serial protocol on pin 2 (AUX bus). > What cable is used to interconnect the two? 15 pin HD - KPAK3AUX. see: http://www.elecraft.com/manual/KPAK3AUX%20Cable%20Set%20Instructions.pdf > There might already be a GPIO No - read the K3 Owner's manual for a description of the GPIO signals on the ACC connector. 73, ... Joe, W4TV On 9/4/2012 8:29 AM, Thomas Horsten wrote: > I am wondering if anyone knows how the KXPA500 signals its state to the K3. > What cable is used to interconnect the two? There might already be a GPIO > on the extension connector that enables the alternative power settings on > the K3 on a per band basis. > > Any info? Of course if there isn't wouldn't it be great if Wayne could add > it :) > > 73, Thomas M0TRN > > On 29 August 2012 01:52, Vic K2VCO <[email protected]> wrote: > >> I also have suggested this. I wrote a macro which toggles the DIGOUT1 line >> which I use to >> enable/disable my 'dumb' amplifier. The macro also switches between 100w >> and 65w, which is >> more or less what I use to drive the amplifier. But I would really like to >> have access to >> the per-band settings used for the KPA500. >> >> This feature is only available if you have a KPA500 now, but it shouldn't >> be hard to make >> it accessible to everyone. >> >> On 8/28/2012 4:41 PM, Thomas Horsten wrote: >>> Hi all, >>> >>> I know that the K3 can remember a separate power level for transmitting >>> with an intelligent external amplifier like the KPA500, but I have an old >>> boat-anchor amplifier which I switch in and out with a simple switch >>> connected to the KEY OUT line of the K3. >>> >>> Sometimes I am working barefoot on the K3 with 100W and then I decide I >>> need some extra power and turn on the amplifier. Then I have to turn the >>> drive down on the K3 to about 40W to drive the amplifier, but sometimes I >>> forget and the result is amplifier overdrive and burnt smell from the >> tubes. >>> >>> It would be very nice if there was an input on the K3 that would switch >> to >>> the alternative per-band memory for drive power. It might already be >> there >>> and used for the KPA500, but I couldn't find it in the manual. >>> >>> 73, Thomas M0TRN >> >> >> -- >> Vic, K2VCO >> Fresno CA >> http://www.qsl.net/k2vco/ >> ______________________________________________________________ >> 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 > ______________________________________________________________ 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
