Don, I downloaded the utility and SWR displayed stayed the same, 1.1:1 while the display on the KPA1500 peaked at 2 to 1, one red light. This occurs around 60C. No problem until then.
73, Mike AD5A -----Original Message----- From: Don Wilhelm <donw...@embarqmail.com> Sent: Sunday, April 29, 2018 2:28 PM To: Mike Crownover <mike.crowno...@gmail.com>; Mike Crownover <a...@gvtc.com>; elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA1500 SWR meter Mike, Have you looked at the SWR report shown in KPA1500 Utility? Try that and see whether it shows the same as the display. There are 2 pieces to the SWR - there is the sensor part and then there is the display part. There is a possibility that the sensor is doing OK, but the display end of things may be what is causing the problem. KPA1500 Utility uses a different path (but the same sensor) for its display of SWR than the front panel display. In either case, it does seem (by my first guess) that there is a solder or cable connection in the KPA1500 that is heat sensitive. How high does the SWR go? If it stays below 1.5, it will cause no problem despite your concern for that behavior. Unless I am mistaken, the SWR indication on the K3 shows only the SWR of what is connected to the K3, which is the amplifier input 73, Don W3FPR On 4/29/2018 2:25 PM, Mike Crownover wrote: > Don, > > Thanks for the comment. Ive done that test and at low temps,~35c, no > difference at 1500 or 500. I havent done it at high temps yet, but I > would think if it were arcing, the temp of the amp wouldnt matter, > although Im certainly no expert on these matters. Additionally, I > would expect the SWR indicator on the screen to show the fluctuation > as well. It never moves from 1.1:1. > > Mike AD5A > ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com