[Elecraft] my KPA1500 and 160M

[N4ZR]

Or, for that matter, try it into a dummy load, so that you can verify 
the performance of the KPA-1500's tuner on 160.

73, Pete N4ZR
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On 9/1/2020 1:43 PM, Michael Walker wrote:
> Do you have actual antenna measurements with an analyzer?  It would be
> helpful to know what the KTA500 is seeing.
>
> Mike va3mw
>
>
> On Tue, Sep 1, 2020 at 1:31 PM Daniel Carille via Elecraft <
> elecraft at mailman.qth.net> wrote:
>
>> Be sure the K3 tuner is off when using the KPA1500’s tuner.
>> Dan - NB2P
>>
>>
>> Sent from Yahoo Mail for iPhone
>>
>>
>> On Tuesday, September 1, 2020, 12:51 PM, 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
>>
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