Roland, There are two pieces you need:
BCD to individual band decoder: http://www.unifiedmicro.com/decoder.html And the voltage divider to generate the voltages per band: http://www.qth.com/topten/apnote3.htm I hope this helps, Andreas, N6NU Menlo Park, CA > -----Original Message----- > From: [email protected] [mailto:elecraft- > [email protected]] On Behalf Of DC1RS > Sent: Monday, December 15, 2008 1:23 PM > To: [email protected] > Subject: Re: [Elecraft] K3 and IC- 2KL; negative voltage modification > > > I would be also very interested in the interface you will use for band > switching of the 2KL. > I use an AT500 tuner and I'd like to do the bandswitching from the K3, but > i > couldn't find any > decoders in the web. > > 73 de Roland, DC1RS > > > Ron N9RC wrote: > > > > I use the K3 with a 2KL. I have the parts for auto band switching > (decade > > band info convertor) but have yet to build it. The max power setting I > > use is 25 watts for 500 watts out but have to watch the K3 power > closely. > > The 2KL trips out easily when over driven and depending on band, mode > and > > antenna SWR (worst case 1.5:1) I have to reduce the K3 power to as much > as > > 12 watts to avoid trips. I believe the K3 "may" have a power spike on > > first sylable that causes some of the trips. I do not use ALC but as > > things settle I may try it. I use the MFJ 600 watt auto tuner with the > > 2KL and generally it works quite well. I was not happy with a AT-500 I > > had. > > > > Ron, N9RC > > > > > > > > -- > View this message in context: http://n2.nabble.com/K3-and-IC--2KL-- > negative-voltage-modification-tp1617415p1660062.html > Sent from the Elecraft mailing list archive at Nabble.com. > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
