[Elecraft] my KPA1500 and 160M

[Victor Rosenthal 4X6GP]

99:1 sounds like the wrong antenna output is selected.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 01/09/2020 19:36, w5sum at comcast.net 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