Posted by
Nicklas Johnson on
May 12, 2020; 8:00pm
URL: http://elecraft.85.s1.nabble.com/K3S-current-draw-relative-to-KAT3A-settings-tp7660811p7660821.html
On Tue, 12 May 2020 at 12:34, Joe Subich, W4TV <
[hidden email]> wrote:
What do you see with: 1) a 50 Ohm load connected to the antenna port
> and the KAT3A bypassed,
See the "bypassed" column in the original chart.
> 2) a 50 Ohm load connected to the antenna
> port and the KAT3A removed (KANT3 board installed),
I purchased the K3S with the KAT3A installed, and as I don't have a KANT3
board handy to swap in, I am unable to tell you.
> 3) a 50 Ohm
> load connected to the antenna port and the KAT3A tuned for SWR =
> 1:1,
For 13W, on 40m, 6.71A; on 20m, 8.2A. (The dummy load isn't a perfect 50
ohm match unfortunately; it's off by a few ohms and I measure 57 ohms with
a DC meter.)
> 4) your "antenna" connected to the antenna port and the KAT3A
> tuned for minimum SWR?
>
For 13W, on 40m 6.9A, on 20m 9.4A. In both cases the ATU had no trouble
making a 1:1 match.
The actual measured SWR of the antenna system (ie, with an SWR meter) is
3.7:1 on 40m and 2.9:1 on 20m. Not a great match obviously, but expected
for what it is.
Nick
--
*N6OL*
Saying something doesn't make it true. Belief in something doesn't make it
real. And if you have to lie to support a position, that position is not
worth supporting.
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