Forgot to mention, absolutely run the calibration again with the correct 13.8V supply. Then address the power output - if it still exists.
On Dec 24, 2012, at 12:52 PM, Ian Kahn - Ham <[email protected]> wrote: > So, it looks like I tracked down my low output issue. The problem appears to > be with my West Mountain RigRunner, not my K3. A big "thank you" to all who > offered guidance on getting this thing tested and troubleshot. > > Thank you, 73, es Merry Christmas! > > --Ian > > Ian Kahn, KM4IK > Roswell, GA EM74ua > [email protected] > K3 #281, P3 #688 > HRD v5.x/6.0 Test Team > > On 12/24/2012 12:22 PM, Lyle Johnson wrote: >> Might not be a 30W drop, but a matter of calibrations of both the internal >> wattmeter (there is a menu item to adjust it) and the external wattmeter. >> >> If the output power is set to 100W and the internal wattmeter is reporting >> 100W, then the K3 is happy. If in fact the output power is only 70 W >> (double check if the ATU is bypassed or in line, antenna wiring and chassis >> connections are tight int he k3 etc), then the K3 wattmeter may need to be >> calibrated. If that is the case, you need to go to the menu and adjust it. >> But only do this if you are CERTAIN your external wattmeter is in fact >> accurate. Once you are certain the K3 wattmeter is reporting within spec, >> re-run the Tx calibration. >> >> BTW I think a 2V drop is still excessive. Might be long runs or light gauge >> wire or ? But that is a separate issue from the wattmeter accuracy. >> >> 73, >> >> Lyle KK7P >> >>> It is highly possible the culprit is my RigRunner, purchased in March of >>> this year. When I took it out of line, the voltage drop went from over 4V >>> on tx to under 2V (13.8V down to about 12V). Current draw is .78 to .82 >>> amps on rx and 19.8 amps on tx. However, while the internal power meter >>> shows 100W, an external meter into a dummy load only shows 70 watts out. >>> The current and voltage readings look normal, according to Rev. D10 of the >>> owner's manual. But I'm still concerned about a 30W drop at the output. >>> Anyone have any other suggestions? >> >> ______________________________________________________________ >> 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
