Marc Well I worked on the winding spacing and got it up to a little over 4 watts, actually 4.4, so that did help. I sent off an email to Elecraft yesterday when I posted this and no answer yet, maybe I will call them and talk to Scott there. I have to get a couple of speaker slides, heck those things are small! I even played with the 40m section and got another watt out there also! Can I live with 4.4 watts on 20,maybe, but if I get more pwr out, even better.
Thanks again for the info Rick/WA6ES Marc PE1FJN wrote: > > Hello Rick, > > HNY2010. > > When I had output power problems at 15m, not at 20m, I increased the > output power by 'tuning' the low pass output filter (L9/L10, L11/L12), > suggested by ELECRAFT. By bringing windings together I was able to get the > required output. It does not look as nice when having the windings evenly > spread, but in the end the output power is more important. > Make sure you have a dummy load when checking Pout, as when VSWR is poor, > depending of the COAX length you will see high or low max output power on > display K1. Reason: K1 is measuring Vpeak out, and calculates it back to > power. So reading on display is only reliable when you have 50ohm, or have > installed the internal antenna tuner. > > Also make sure you have 13.8V, Pout max between 12V and 13.8V makes a > difference. I run it at 12V, Power is 5W at 15m/20m band, while running at > 13.8V I can easily get up to 7Watt. For me 12V is fine. > > If tuning of the coils does not work, contact elecraft support, and refer > to power problems from PE1FJN October this year at 15m SN: 2761. I changed > 1 resistor on instructions from ELECRAFT. At this moment I have now no > access to this mail(sorry), but I'm sure you will be able to get the same > instructions. Having changed this resistor power was very fine, and not > marginal anymore. > > Hope this helps, > > 73 > PE1FJN > Marc > K1 SN:2761 > > PS: Good Luck, at 20m DX is really nice with this RIG. > -- View this message in context: http://n2.nabble.com/K1-Low-power-tp4248493p4253616.html Sent from the [K1] mailing list archive at Nabble.com. ______________________________________________________________ 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

