[Elecraft] KPA-1500 wish list

N4ZR n4zr at comcast.net
Mon Nov 18 21:32:22 EST 2019


Jim, I think Paul is talking about something different here.  On Page 18 
of the manual it describes tapping the ATU Tune button again within 3 
seconds of completing the initial tune, to get closer yet.  I just tried 
it, and it works well so long as you have trained the tuner for both 
antennas on every segment.  Unfortunately, there appears to be no way to 
actually transmit the first character at full power when changing 
antennas or QSYing bigly.  I understand the tuner bypasses the amp until 
it has determined which setting it should use, which it can only do by 
learning what the load looks like by actually sending power into it.

73, Pete N4ZR
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On 11/18/2019 8:18 PM, Jim Brown wrote:
> On 11/18/2019 11:34 AM, Paul Baldock wrote:
>> I have manually tweaked (with amp in standby and running 50W) my auto 
>> learned atu settings to get as close to 0W reflected power as possible.
>
> Yes, and this is exactly what the manual says to do -- before using 
> the amp, train the tuner by tuning at multiple frequencies in each 
> band, AND for each antenna that you use on that band. The tuner is 
> smart enough to select between multiple "trainings" when you use more 
> than one antenna.
>
> 73, Jim K9YC
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