Re: my KPA1500 and 160M

Posted by Elecraft mailing list on Sep 01, 2020; 5:30pm
URL: http://elecraft.85.s1.nabble.com/OT-WWV-Time-Transmissions-tp7664561p7664587.html

Be sure the K3 tuner is off when using the KPA1500’s tuner. 
Dan - NB2P


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On Tuesday, September 1, 2020, 12:51 PM, [hidden email] wrote:

This morning I put up a W7FG true ladder line 160M doublet.  Upon testing,
the K3 internal atu does great, matches at 1.3:1.  But when I throw the
KAP1500 in line, it gets all pissed off, throws up and faults out.  Says SWR
is 99:1 !!!

The Antenna:  The Apex is at 50'.  It is in a inverted Vee config, with both
ends approx 20' off the ground.  I'm using 59' of the 600 ohm true ladder
line to a Balun Designs 5KW 4:1 Balun. This is fed with 22' of Wilson LMR400

Both the K3 internal atu, AND the KPA1500 internal atu get a great match on
80M, 1.2:1  with no issues.

Honestly, most of the work on 160M is FT8 running 20 watts or less, so just
using the K3 to get a successful match on 160M is fine

I just wonder why the KAP1500 doesn't like the same antenna the K3 likes.

Any ideas here fellers?

thanks and 73

73 and GL OM DE w5sum

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