[Elecraft] K2 power setting for SSB QRP?

[Don Wilhelm]

Kristinn,

If you have properly calibrated the wattmeter (balanced it according to 
the manual and made the R1 adjustment with respect to a known good power 
meter), then yes the peak power developed by the K2 should be equal to 
the power setting.  The accuracy is only as good as the external meter 
used when calibration the KAT2.

73,
Don Wilhelm

TF3KX wrote:
> Thanks, everyone.  I am still working on the presumption that 5W output for
> CW and 10W PEP output for SSB would be acceptable for my purposes of award
> gathering and contesting, as I already pointed out in my initial post.  I
> justify this even further with the fact that my antennas are mediocre at
> best, typically random wires or a temporary dipole at best.
>
> But my question was specifically on the K2 and how it controls its output
> power.  So, again, I presume the K2/KAT2 power regulating circuitry
> guarantees that:
>
> - if I set my power level at 5W my CW key-down output power will actually be
> 5W
> - if I set my power level at 10W my SSB PEP output power will actually be
> 10W (avg power somewhat less)
>
> ...or relatively close to this.  Right?
>
> 73 - Kristinn, TF3KX
>
>
>
> hank  k8dd wrote:
>   
>> ----- Original Message ----- 
>> From: "David Yarnes" <w7aqk at cox.net>
>> To: "Ron D'Eau Claire" <ron at cobi.biz>; <elecraft at mailman.qth.net>
>> Sent: Saturday, August 09, 2008 9:20 AM
>> Subject: Re: [Elecraft] K2 power setting for SSB QRP?
>>
>>
>>     
>>> Most QRP contests have a QRP limit of 5 watts for both CW and SSB.  I
>>> know 
>>> the ARRL does that.  ARCI, and I think GQRP, had QRP on SSB limited to 10 
>>> watts, I think in an attempt to account for the disparity between the two 
>>> modes
>>>       
>> QRP-ARCI defines QRP as:
>>
>> QRP operation for QRP-ARCI purposes is defined as operation with a 
>> transmitter power output of 5 watts or less (CW)(A1) and 10 watts PEP or 
>> less (SSB)(A3J). QRP-ARCI awards are based on these output levels.
>>
>> .
>> I believe most other QRP organizations agree with this, although there are 
>> some groups / contests that specify that SSB QRP is 5 watts (or less)
>> output 
>> on all modes.  As far as I know, no one uses the well discussed (and 
>> sometimes over discussed!) use of ERP in QRP power levels.
>>
>> 72  73    Hank    K8DD 
>>
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>>     
>
>