[Elecraft] RE: 8W Lo & 40W Hi in Tune

[W3FPR - Don Wilhelm]

Steve,

If you have both the KPA100 and the KAT100, the wattmeter in the KAT100 is
the one that will be used - so calibrate the wattmeter in the KPA100 without
the KAT100 attached (just use a good 50 ohm dummy load), and then set the
KAT100 wattmeter as instructed in the manual and all should fall in line.

73,
Don W3FPR

> -----Original Message-----
> From: Steven Pituch [mailto:spituch at ev1.net]
> Sent: Monday, August 08, 2005 8:52 PM
> To: w3fpr at arrl.net; 'Elecraft Main Group'
> Subject: RE: 8W Lo & 40W Hi in Tune
>
>
> Hi Don,
> Sorry, I forgot to mention that I have tried using several
> Wattmeters after
> the KPA100 and before the KAT100, and they all pretty much agree.  I will
> calibrate the pot as you suggest.  Thanks.
>
> Steve, W2MY
>
> -----Original Message-----
> From: W3FPR - Don Wilhelm [mailto:w3fpr at earthlink.net]
> Sent: Monday, August 08, 2005 7:33 PM
> To: Steven Pituch; 'Elecraft Main Group'
> Subject: RE: [Elecraft] 8W Lo & 40W Hi in Tune
>
> Steve,
>
> How are you determining the power output?  Is the 8 watts and the 40 watts
> what is indicated on the K2 or what is indicated on an external wattmeter.
> If it is an external wattmeter, then the answer is easy - calibrate the
> forward power pot in the KPA100.
>
> OTOH, if the power indication is on the K2 display, look carefully at your
> dummy load.  A good 50 ohm dummy load connected directly to the K2 should
> provide a power output of 2 watts and 20 watts on the K2 display (but the
> KPA100 wattmeter still needs to be calibrated before the actual power is
> equal to what the K2 displays).
>
> 73,
> Don W3FPR
>
>
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