开云体育Further to this, ? I have also tried sending CW out on 10m via my 3 element beam. CW is totally fine until I move down to 28.002 Mhz or lower. Then it does the same bypass as it does on the entire CW portion of 17m ? Its totally fine everywhere else on the 10m band. ? Anyone else having this issue??? ? Is this a programming thing in the amp to have it cut out near the 10m band edge so CBers don’t use this amp? And if so, maybe the programming thing is doing the same thing on the 17m CW portion for me. ? Just shooting in the dark as my background is computer science, not electronics. ? ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Barry via groups.io
Sent: August 8, 2020 3:42 PM To: [email protected] Subject: Re: [la1k] SWR High SSB ONLY - When Using LA-1K Amp ? Thank you for reply. ? I think your correct. ? Im going to investigate my 17m antenna further. ? 73 ? From: [email protected] [mailto:[email protected]] On Behalf Of Kent Trimble, K9ZTV ? The swaying is not a major issue except in high wind gusts. ? ? I’m leaning toward the belief that the LA-1K is susceptible to momentary SWR spikes that happen so fast they can only be detected (in my shack, anyway) by viewing videos of the LA-1K’s display on a frame-by-frame basis. ?I have a capture that shows this happening at the same moment the HF-AUTO is displaying a steady 1.04 SWR. ?If the cause is CMC I would think it would be detected by the HF-AUTO before the LA-1K. ?It occurs most frequently at 1000 watts; less frequently at 500 watts; and seldom if ever at 100 watts. ?FW is 1.07B. ?Antenna is an OCFD with numerous chokes on feed-line and interconnecting cables. ? Your statement that “I? am only having it go into bypass mode now on 17m CW” implies it previously went into bypass mode on other than 17m CW. ?That’s why I was asking in order to have more information before answering.? ? Kent ?K9ZTV
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