Re: KPA-1500 issues

Posted by Michael Walker on Nov 27, 2018; 10:51pm
URL: http://elecraft.85.s1.nabble.com/KPA-1500-issues-tp7646571p7646583.html

If you truly want to understand SWR, I recommend you pick a frequency and
make up a 1/4, 1/2 and 1 wavelength sections of 50ohm coax.

Then measure the SWR at those points into various different resistive
loads, like 10, 25, 50, 75, 100, 150 and 200 ohms.

I think you will find the results very interesting.

Mike va3mw


On Tue, Nov 27, 2018 at 5:23 PM Wes Stewart <[hidden email]> wrote:

> A few months ago I wrote about the potential errors in measuring SWR with
> amateur grade equipment. See my comments in this thread:
>
>
> http://elecraft.365791.n2.nabble.com/K3-SWR-Numerical-Indication-td7643839.html
>
> I imagine "the best they can do" is accurate.
>
> Wes  N7WS
>
> ps. I also said that if I was wrong, I was sure I would hear about it.
> Crickets.
>
> On 11/27/2018 12:39 PM, Paul Baldock wrote:
> > [snip]
> >
> > I also note that when into a perfect 50 Ohms, and the tuner bypassed, on
> 6
> > meters, my KPA1500 says the SWR is 1.4:1. On 10 meters it reads 1.2:1.
> Rene
> > from Elecraft says "this is the best they can do".
> >
> > Other than the issues above I am very happy with the KPA1500.
> >
> > - Paul
>
> ______________________________________________________________
> 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]

______________________________________________________________
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]