Has he done a cold reset? It really sounds like there is no antenna attached in that band segment.
Has he tried simply removing the antenna/dummy load connection and see if the results are the same? If so, then clearly the antenna choice needs to be examined. I'd be willing to bet his K3 has an antenna tuner. 73 de Brian/K3KO On 2/9/2012 9:14 PM, David Gilbert wrote: > You've never said whether or not you can receive OK in those band > segments. If so, I doubt that the synth board would be the problem. > > Dave AB7E > > > > On 2/9/2012 5:07 PM, Tom Kramer wrote: > >> I am a new person in this group and I will admit that I have not looked at >> many of the hundreds of previous posts so I will apologize in advance for >> being a bit lazy if this topic has been dealt with before. >> >> I have a home assembled K3 SN 4210 that has developed a most annoying >> problem. I have exchanged a number of emails with Gary Surrency about this >> with basically no conclusion and an apparent lack of desire to solve it. >> >> I discovered that when attempting to transmit between 24,910.0 and 24,930.0 >> the swr bar graph shows a pulsating full scale reading and the dial reads >> SWR between 9:1 and 12:1, and power output of maybe 20 watts. Outside this >> range SWR is normal and power output is full 100 watts. This can be into a >> resonant antenna or dummy load. >> I have done the synthesizer calibration preceded of course by the ADC ref >> calibration multiple times. I sent Gary a list of all the parameters >> outputted by these tests and he says all look to be in the normal range. I >> have since discovered that the same problem appears between 28,500 and >> 29,000 Khz as well. I am trying to keep this somewhat short so I didn't >> supply every detail of the testing. >> Have other people experienced this and what if any solution did you find? >> Gary suggests a new synthesizer board @ $200+ but no at this point there is >> no guarantee that will fix the problem. I have made arrangements to test >> this with another K3 next week, but curious if this problem is something new. >> Tom NQ7R >> Casa Grande, AZ >> >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1424 / Virus Database: 2112/4799 - Release Date: 02/09/12 > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
