I was curious to determine what a 3 db increase in power output might mean in terms of total number of possible contacts. So I set up my K3 to run WSPR on 20 meters for a while today:
At regular intervals over the course of 9 hours the power output was toggled back and forth between 5 and 10 watts, logging some 2,000 signal reports for the entire period. So, how much is a 3 db increase in power output worth? According to my WSPR log data, about 40% more contacts. (At that rate a 6 db increase would give nearly twice as many contacts. And a K3/100 should have about three times as many QSOs in it than a K3/10...) Anyhow, the original intention to mod the K2 might be justified. It's not an insignificant improvement, though it might be good to log a few thousand more reports to make sure. 73, Drew AF2Z On Fri, 27 Sep 2013 08:24:39 -0700, you wrote: >My first thought on the audio was to get some efficient earbuds. Lightweight >and cheap. > >Over on the KX3 list, people like the Chill Pill powered speakers. > >I know it is a second box, but the Hardrock 50 amp has been getting good >reviews. You would not need to get it out except in an emergency, so it could >stay deep in the pack. See: >http://www.hobbypcb.com/amateur-radio/amateur-radio/hardrock-50-hf-power-amp-kit.html > >I think there is a lot of evidence that 3dB does not matter. 10dB matters. 6dB >might matter. > >wunder >Walter Underwood >K6WRU >CM87wj > ______________________________________________________________ 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
