XV power control

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XV power control

zeke7237
Recent model K2, just built the K60XV for it. VRDET looks fine .. half
a volt at the low end up to about 3.5 on the high end, and the
meter/display increase smoothly. When I connect one of the XVs to it,
the XV out pegs at about 150mw indicated and if I back the poiwer down
to min it still shows 4 bars on the XV. I've gotta find my Accuvolt
and build it so I have something to measure a milliwat with, but in
the meantime does anyone have any ideas/suggestions as to what may be
wrong? Seems to me that if VRDET looks OK then the K2/K60XV must be
working .. but all three XVs show the same effect which makes me
suspect the K2 .. I have another K2 but havn't done the KAT mod on it
yet, I suppose I can do that as well to isolate things ..

de john/w1rt
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Re: XV power control

Matt Osborn
John,

I've seen those symptoms when the XV power out was adjusted to 20
watts at the high end of the band.  The K2 28MHz band has a bandwidth
of 800KHz.  If the XV 20 watt power is adjusted at a frequency much
over that 800KHz bandwidth, the K2 isn't really putting out the full
1mw so the XVpower out is adjusted too high.

On Sat, 18 Mar 2006 18:22:21 -0500, "John D'Ausilio"
<[hidden email]> wrote:

>Recent model K2, just built the K60XV for it. VRDET looks fine .. half
>a volt at the low end up to about 3.5 on the high end, and the
>meter/display increase smoothly. When I connect one of the XVs to it,
>the XV out pegs at about 150mw indicated and if I back the poiwer down
>to min it still shows 4 bars on the XV. I've gotta find my Accuvolt
>and build it so I have something to measure a milliwat with, but in
>the meantime does anyone have any ideas/suggestions as to what may be
>wrong? Seems to me that if VRDET looks OK then the K2/K60XV must be
>working .. but all three XVs show the same effect which makes me
>suspect the K2 .. I have another K2 but havn't done the KAT mod on it
>yet, I suppose I can do that as well to isolate things ..

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