[Elecraft] wattmeter calibration

[Paul Christensen]

I should also state that when I was calibrating my K3 wattmeter, I was 
looking at three wattmeters in series -- an LP-100, Array PowerMaster, and 
Alpha 4510.  Each wattmeter reads within 2% of each other into a Bird 
TermaLine load.

Paul, W9AC

----- Original Message ----- 
From: "Paul Christensen" <w9ac at arrl.net>
To: <Elecraft at mailman.qth.net>
Sent: Sunday, March 16, 2008 10:34 AM
Subject: Re: [Elecraft] wattmeter calibration


> Todd brings up a good point.  I ran out of range while calibrating at the 
> 5W and 50W level.. I got pretty close but ran out of adjustable range.
>
> Also, I am confused as to what is happening with the RF Gain Calibration 
> procedure.   The routine calls for setting power level at a pre-set level 
> and running through the bands.  But how is the value adjusted and saved ? 
> And if TUNE is depressed later, are the saved values affected?  Or, is it 
> the fact that the RF Gain procedure is conducted while in CONFIG that the 
> those settings are saved?  It's just a very strange procedure and I don't 
> understand how a relationship is established between the displayed power 
> and RF Gain setting during setup.  Can anyone explain?  Tnx!
>
> Paul, W9AC
>
>
> ----- Original Message ----- 
> From: "Todd Ruby" <rubywine at verizon.net>
> To: <Elecraft at mailman.qth.net>
> Sent: Sunday, March 16, 2008 10:09 AM
> Subject: [Elecraft] wattmeter calibration
>
>
>>I finished assembly except for PA last week and went through the 
>>calibration sequences. I am not able to have the wattmeter on the K3 
>>match the output reading on the Bird wattmeter. Any suggestions?
>>
>>
>>
>>
>> 73
>> de
>> todd
>> WB2ZAB
>>
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>