I'd be willing to send Rob my KX2 for testing. 73, Matt NQ6N
On Thu, Mar 9, 2017 at 2:42 AM, Jim Brown <[email protected]> wrote: > On Wed,3/8/2017 8:41 PM, w7aqk wrote: > >> you are right to be concerned about how clean a transmitter is, but there >> are regulatory requirements about that. If you don't meet those standards, >> you supposedly can't sell it!!! >> > > Sadly, it goes FAR beyond that. See my comparison of ARRL Lab data for > selected popular rigs, some of them in the $10K range. Some of the most > expensive are really dirty on CW. http://k9yc.com/TXNoise.pdf Also look > at > > http://k9yc.com/P3_Spectrum_Measurements.pdf which consists of > measurements I've done myself of rigs that were made available to me. > > Most of the bad signals I hear are, I think, because someone is running >> things at "maximum'! >> > > Partly true, but some rigs are FAR dirtier than others. The link about > concentrates on CW. Many popular rigs generate splatter in their output > stage due to poor design of TX ALC. Using ALC between the rig and a power > amp to set TX power is recipe for splatter and clicks. Mistuning a power > amp, or failure to match an antenna to the power amp also causes splatter > and clicks. See http://k9yc.com/K6XXAmpTalk.pdf > > 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]
