Re: KPA-1500 issues

Posted by Roger D Johnson on Nov 28, 2018; 12:12am
URL: http://elecraft.85.s1.nabble.com/KPA-1500-issues-tp7646571p7646589.html

Interesting! I just ran some tests on my station into Bird load; tuner bypassed:

At 50.1 mHz:

LP-700 1.06
K3 1.5
KPA1500 1.0

At 9.56 mHz (geometric mean freq)

LP-700  1.05
K3 1.1
KPA1500 1.0

At 1.825 mHz:

LP-700 1.05
K3 1.1
KPA1500 1.0

My KPA1500 looks good but K3 is off on 6m.

73, Roger


On 11/27/2018 5:22 PM, Wes Stewart 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
>
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