[Elecraft] PSK31 Power Level

[Lowell]

I am glad Parker asked the question.  I have a k2/100 and for PSK have been 
setting the power level at 25 watts as displayed on the K2 readout. I do 
have a small blower mounted under a shelf over the K2/100---probably not 
necessary, but, as we all know, heat is the culprit for reducing MTBF's. 
Also, why should there be any difference in power out for single tone or a 
PSK signal?  Thanks, Don, for your comments.  73, Lowell, W5FH
----- Original Message ----- 
From: "Parker Buckley" <pbuckley at woh.rr.com>
To: "W3FPR - Don Wilhelm" <w3fpr at arrl.net>; <Elecraft at mailman.qth.net>
Sent: Sunday, February 25, 2007 5:02 PM
Subject: [Elecraft] PSK31 Power Level


> Elecrafters,
>
>
>
> Don has been coaching me off-list through installation of one of his fixed
> audio output kits, which I've had around here for many months, un-built.
> All went well, except the audio through my computer was distorted.  I
> eventually tracked it down to the K2 DSP gains being set too high.  I was
> getting away with that in the basic K2, but the fixed audio unit doesn't
> like being pushed that hard.  I've now carefully reset the DSP gains to 
> get
> the same audio level with DSP and with DSP bypassed.  Everything is 
> working
> great.  I'm now reminded of a nagging question since the last time I 
> strayed
> from CW to PSK 31.  I've read numerous places about setting the power 
> level
> (mine is a QRP K2) to five watts for continuous use like PSK.  Does that
> mean five watts for single tone like CW, or five watts average as the two
> tones warble back and forth?  I'm using a WM-2 wattmeter in the output.
> Running about 10 watts single tone, I get about five watts warbling and a
> single ALC bar flickering.  Is this okay, or should I back it down to five
> watts single tone?  I thought this question might be of interest to a 
> wider
> audience.
>
> Parker
>
> WD8JOL  K2 #2636
>
>
>
> ...back to work tomorrow, and peace for Don.
>
>
>
>
>
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