[Elecraft] KAT500 tuning & K3 power control

[ab2tc]

Hi,

I don't think that's true. When tuning is finished the LP-100A sees the
final SWR which is a good one, less than 1.5:1 and should be able to display
the true power out of the K3. Unless the LP-100A has a really strange
problem, which I doubt, the K3 power output is truly at levels way above the
selected 20W tuning power.

Knut - AB2TC


Phil Hystad-3 wrote
> I don't think you are seeing 60 true watts.  The watt meter probably
> measures accurately with a 1:1 SWR or 50 ohms resistive.  Since the SWR is
> what is jumping all over the place what you are seeing is the meter
> jumping due to the SWR changes.  Now the voltages might jump in concert
> with the SWR but if you tune at low power as recommended this should not
> be a problem.
> 
> 73, phil, K7PEH
> 
> PEH's iPad
> 
> On May 28, 2013, at 2:24 PM, ab2tc <

> ab2tc@

> > wrote:
> 
>> Hi all,
>> 
>> For a while I have been quite concerned with the way my K3's power
>> control
>> behaves when tuning a previously unknown antenna frequency with the
>> KAT500.
>> The KAT500 hunts *a lot* and the K3's power output goes more or less
>> crazy
>> as a result. I have an LP-100A in line and it's not unusual for me to see
>> a
>> K3 power output of 60W or more when done tuning (tuning power is set at
>> 20W
>> as recommended). Is this healthy for the K3?
>> 
>> Knut - AB2TC
>> 
>> 
>> 
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