[Elecraft] 80m KPA1500 High reflected power problems

[Michael Walker]

You may want to try choking the feedline at the antenna and more importantly at the amp end with mix 31 or 43 chokes.  

The high swr is likely the symptom not the problem. 

Mike va3mw


> On Mar 9, 2019, at 10:05 PM, Peter Dougherty <lists at w2irt.net> wrote:
> 
> Jim, this is with the internal tuner in either mode--bypassed or inline. If I sit on 3504, I'm about 1.65:1 natively. I could run that without a tuner or with. But in either case, it faults out instantly with QRO power applied. The SWR seems to go haywire on the lower frequency ranges of the 80m band.
> 
> - pjd
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Jim Brown
> Sent: Saturday, March 9, 2019 5:46 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] 80m KPA1500 High reflected power problems
> 
> Hi Peter,
> 
> The KPA 1500 has a built-in antenna tuner. Is it possible that it's not set up, or is not set up correctly, or is not being used correctly? Perhaps the wrong operating mode for it, or it's calling up wrong memorized settings?  I don't own one, but borrowed one from K6XX while he was at WRTC. I mostly used it on 6M, plus the few hours 20M was open to DL enough to work the WRTC stations.
> 
> 73, Jim K9YC
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html