Graham I value your input on my VFO hash issue. Of all the responses yours seems to best match my situation.
I bought my radio factory built and have never been into it. When I retired last year, I meant it. I bought this K3 in December hoping not to ever open any more radios. I prefer the operating and doing the antenna builting part of the hobby. The last two years of work were with the Motorola VHF/UHF CDMs and their Canopy microwave radios and that was to be the end of tweaking the inner parts of the circuits. Programing radios is fine but dealing with surface mount boards and their interconnects requires more lab than I have here at home. I guess I will wait for solid factory direction before I venture inside for the first time. You know, having not built my K3 leaves me at quite a disadvantage if I should start now by dealing with the inside workings of the radio. I've seen this kind of noise on early radios. It makes sense that a optical encoder digital device on the VFO knob would generate this kind of pulse noise. I gather that the RIT knob is also an encoder too. But why is it only showing up on the low end of 10 meters? Maybe some ferrite chokes on the ribbon cable/wires would suppress the emission? Thanks again.... 73, John, W1QS On Jun 27, 2009, g3...@lineone.net wrote: This noise was previously reported under the title "K3 Tuning encoder pulses and birdie problem" In my case it is only noticeable at the low end of 28MHz when there is a low noise level from the antenna or with a dummy load attached. Wayne suggested using the noise blanker on a low setting like t1-5, also tightening screws and tmp cables may help. In my case it seemed to get better when I installed the KRX3, but maybe cos I tightened up the screws and cables. HTH Graham ----- Original Message ----- From: "John Lawrence" <j...@hughes.net> . > What I've discovered and reported to factory tech support is a very noticable hash noise while in the receive mode with any bandwidth centered around 28.000 MHz to 28.050 MHz. ______________________________________________________________ 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
