I operated over the weekend as W6E as one half of a M/M HP County Expedition in CQP.
I ran the SSB side of the show and N6MI the CW. Scott has the FTDX101. We were both operating 500w into similar spec-ed 2 element beams on 20/15/10. We were about 300-500 ft apart. I’m looking for advice on how to minimize the CW thump thump I would hear when we were both on the same band. It didn’t raise a HI SIG warning on the K3s but it was audible enough to distract me especial if an adjacent station was bleeding into my band. Maybe the solution is a K3s setting, maybe filters (tough) or better separation. Paul W6PNG/M0SNA www.nomadic.blog <http://www.nomadic.blog/> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
On 10/8/2020 4:26 PM, PAUL GACEK via Elecraft wrote:
> I operated over the weekend as W6E as one half of a M/M HP County Expedition in CQP. > > I ran the SSB side of the show and N6MI the CW. Scott has the FTDX101. > > We were both operating 500w into similar spec-ed 2 element beams on 20/15/10. We were about 300-500 ft apart. > > I’m looking for advice on how to minimize the CW thump thump I would hear when we were both on the same band. It didn’t raise a HI SIG warning on the K3s but it was audible enough to distract me especial if an adjacent station was bleeding into my band. #1) Buy Scott a better radio. Yaesu radios are notorious for being a very bad neighbor. They're dirty, there's nothing another radio can do when the other radio is spewing trash on your frequency. #2) Study my talk on multi-station interference for many things you can do with station building, antenna choice, feedline choice, antenna layout,and the use of serious ferrite chokes at every antenna feedpoint. Also see my detailed analysis of ARRL Lab tests of a selected number of rigs. The raw data for my report came straight from ARRL Labs in electronic form. Also see ARRL Lab plots of keying bandwidth and phase noise for Scott's radio. k9yc.com/publish.htm 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
On 10/9/2020 10:39 AM, Walter Underwood wrote:
> Every time I see one of those plots from the ARRL Lab, I wonder “what is a good number?” I really wish they would add some additional lines to the graph. One suggestion: > > * FCC regulated limits (where they exist) > * 90th percentile (best 10%) of tests in the previous five years > * Best test in the previous five years Some of that information is in my summary of ARRL Lab tests. FCC limits are not expressed well for those who deal only with numbers. What SHOULD be the dominant paragraph says that the bandwidth of a signal shall be the minimum required for the means of transmission. In practical terms, that means carefully shaped CW keying, minimum phase noise, minimum IMD. It's essentially a "state of the art" spec. But because there are no numbers attached, the paragraph is widely ignored. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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