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List:       elecraft
Subject:    RE: [Elecraft] Lower power output after master reset...
From:       Brett gazdzinski <brett.gazdzinski () verizonbusiness ! com>
Date:       2007-07-30 16:48:58
Message-ID: 002e01c7d2c9$861c0070$a5b220a6 () mcilink ! com
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One thing I noticed on my K2 is that the slightest
swr will fold back the power output a lot.

The basic K2 reads power output as voltage only at the 
antenna output, and that is used to adjust the power
output of the radio.
Pushing the tune button would change the power output
a lot, as the rig reads the voltage and makes adjustments.

When you add the built in antenna tuner, that has an swr
reading circuit, so power is more accurate and stable I think.

I think there is an swr calibration procedure, and you
might also make sure the antenna tuner actually tuned down
to a 1.1 to 1 swr.

Brett
N2DTS



> -----Original Message-----
> From: elecraft-bounces@mailman.qth.net 
> [mailto:elecraft-bounces@mailman.qth.net] On Behalf Of Steve Kallal
> Sent: Monday, July 30, 2007 11:12 AM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] Lower power output after master reset...
> 
> Hi,
>  
> I managed to fix my K2 after an intermittent on the Control 
> Board appeared.
> In the process I did a master reset hoping somehow that would fix my
> problem. Now that my K2 is operational again, I've lost some 
> of my power
> output. It is almost certainly a calibration or setting issue.
>  
> I didn't build this K2 nor any other. So I don't know my way 
> around the rig.
> It also has the KAT2 option, which probably also lost some settings.
>  
> My power used to peak at 15 watts on 40 meters. Now it is 
> lucky to get 10
> watts. Otherwise the K2 seems just fine.
>  
> Can someone point me to right part of the manual to make the necessary
> adjustments. My K2 is serial number 2289. It has the mods for 
> the conversion
> of Revision B and the 2.04p firmware. The KAT2 firmware is 
> 1.09, at least
> that is the second # showing in the version display.
>  
> 73,
> 
> Steve N6VL
> 
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