[Elecraft] KPA-1500 tuner questions

[Bob McGraw K4TAX]

Personally I'd try to correct the antenna issue so the tuner in the 
KPA1500 performs  as designed.  The antenna should be able, with the 
KPA1500 tuner, to cover then entire 75/80M band. Although I use the 
KAT500, same equivalent circuit, I have no issue with full band coverage 
on 75/80M.

As to the Palstar, I'd take Jim's advice, and find it a new home.  Two 
automatic tuners in line is a formula for disaster as I view it.   If 
you wish to use the Palstar all of the time, then set the one in the 
KPA1500 to bypass all of the time.

73

Bob, K4TAX



On 3/13/2019 5:01 AM, Dave wrote:
> The problem you will run into is if the antenna SWR changes above the threshold for both the KPA1500 tuner and HF Auto bothtuners will initiate a retune and the two will be fighting each other.
>
>   Example - ice, branches against antenna, etc.
>
> For the bands where you need to use the HF Auto, you are better off leaving the KPA1500 in bypass.
>
> Dave wo2x
>
> Sent from my iPad
>
>> On Mar 13, 2019, at 12:25 AM, Peter Dougherty <lists at w2irt.net> wrote:
>>
>> I think instead I'll go the route of always leaving it in line, but that
>> method would certainly work too! Thanks, Paul!
>>
>>
>>
>> - pjd
>>
>>
>>
>> From: Paul Baldock <paul at paulbaldock.com>
>> Sent: Tuesday, March 12, 2019 3:36 PM
>> To: Peter Dougherty <lists at w2irt.net>; 'Reflector Elecraft'
>> <elecraft at mailman.qth.net>
>> Subject: Re: [Elecraft] KPA-1500 tuner questions
>>
>>
>>
>> At 07:49 PM 3/11/2019, Peter Dougherty wrote:
>>
>>
>>
>>
>>
>> The HF-Auto (external automatic tuner) is bypassed everywhere except the
>> range of 3650 to 4000, and 7100 to 7300. I would like to automatically have
>> the KPA1500's tuner go into bypass at the above ranges,
>>
>>
>> One method (there are others) is to connect a dummy load to the KPA1500, and
>> do a TUNE for each bin in those ranges. The tuner will then learn to go into
>> BYPASS for those BINS.
>>
>> - Paul
>>
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