(My apologies if this has been covered and I missed it in the archives.) Would the 14.5V recommendation also apply to other Elecraft rigs (in my case a K2/10) for best IMD perfomance? Are there any tradeoffs in other areas at that voltage vs. 12.6 (i.e. battery) or 13.8?
TNX/73, Al On Tue October 27 2015 11:45:06 am Jim Brown wrote: > On Tue,10/27/2015 8:46 AM, Bill W4ZV wrote: > > If you operate SSB, you might want to run higher voltage at the K3 > > terminals (e.g. at 14.5V which is below the 15.0V spec) to minimize IMD. > > IMD is just as much a factor on CW as on SSB. CW is really 100% AM of a > carrier by a square wave, which we all know is a lot of AF harmonics, > the strength of which is dependent on the rise and fall time of the > keying waveform. IMD is clearly visible in the sidebands of CW signals > on a spectrum display set for very good frequency resolution -- like a > P3, and especially a P3 with SVGA. > > Take a look at http://k9yc.com/P3_Spectrum_Measurements.pdf > > These data are with power supply voltage in the range of 12.5V. > > 73, Jim K9YC > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
