http://elecraft.85.s1.nabble.com/KPA1500-Operation-on-6-Meters-tp7662211p7662264.html
(Bird) to cheap and not-so-good. For example the MFJ-264 is listed as
printed on its case ) you're limited to 8 seconds at 1500 watts. And
>Hi Larry,
>
> Yes, exact same problem is there with a known good dummy load in
>place of the Steppir yagi I normally use.
>
>--Ed—
>
>
>
>
>
>Sent from Mail <
https://go.microsoft.com/fwlink/?LinkId=550986> for
>Windows 10
>
>
>
>From: Larry (K8UT) <mailto:
[hidden email]>
>Sent: Monday, June 15, 2020 10:09 AM
>To: Ed G <mailto:
[hidden email]>;
[hidden email]
><mailto:
[hidden email]>
>Subject: Re: [Elecraft] KPA1500 Operation on 6 Meters
>
>
>
>Ed,
>
>
>
>Not seeing that here. SWR value unchanged at 10, 20, 30, 35 watts of
>
>drive. Suggest you test into a dummy load to see if the problem goes
>
>away, which would suggest some issue with power level into the feedline
>
>or antenna.
>
>
>
>-larry (K8UT)
>
>
>
>
>
>------ Original Message ------
>
>From: "Ed G" <
[hidden email]>
>
>To: "
[hidden email]" <
[hidden email]>
>
>Sent: 2020-06-15 9:48:55 AM
>
>Subject: [Elecraft] KPA1500 Operation on 6 Meters
>
>
>
> >Folks,
>
> > I am trying to understand some odd KPA1500 operation on 6
>meters. When setting the power output of my K3 to give varying amounts
>of drive to the KPA1500, I am seeing SWR as displayed on the KPA1500
>changing by a significant amount depending on the drive level. This is
>with the KPA1500 tuner bypassed. An LP-100A on the output of the
>KPA1500 is also used and displays the correct low SWR at all drive
>levels that I would expect to be seeing on the KPA1500 display.
>
> > For example, with 5 watts drive from the K3, I see 1.3 SWR on
>the LP-100, and 2.5:1 on the KPA1500 display. As I increase drive, the
>KPA1500 SWR display goes down proportionally, until I get to about 40
>watts drive. At the 40 watt drive level, I am seeing a nice healthy
>1600 watts output, and both the LP-100 and the KPA1500 are showing the
>same 1.3 SWR. 15 watts drive shows 1.3 on the LP100 and 2.0:1 on the
>KPA1500 display. So I am not sure why the SWR sensing and display in
>the KPA1500 is behaving this way? I do not see this oddity on any
>other bands.
>
> > I might also add that attempting to get the KPA1500 internal
>tuner to bring down the high SWR as seen on the KPA1500 results in a
>drop in SWR displayed on the KPA1500 to where SWR almost equals that on
>the LP-100, but using the tuner I would expect that to be even better.
>
> >--Ed—
>
> >
>
> >
>
> >
>
> >
>
> >--
>
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