[Elecraft] K2 2390 Lives! But got a question or two....

[Charles Greene]

At 06:49 PM 1/7/2002 -0800, Ron D' Eau Claire wrote:

Just for info, I have a Daiwa CN-101L and I get similar readings.  The 
Daiwa appears to be about 10% low compared to a Autec WM1 SWR/Power meter, 
the internal power meter in the Ten Tec Omni-VI, and the power meter in an 
IFR service monitor.  So you should believe the K2 power readings.


>Rick wrote:
>
> >All seems to work well "BUT" I got a
> > question or two.  While measuring power output and tweaking for maximum
> > output I used a Daiwa CN-101L SWR & Power meter and the internal power
> > meter. I also used a 50 watts MFJ versaload dummy load (Like the cantenna
> > dummy load) I have the following statistics with full power output on each
> > band:
> >
> > Frequency     Daiwa CN-101L   Internal Power meter
> > 3.750         10 watts                12.1 watts
> > 7.100         11 watts                13.2 watts
> > 10.100        10 watts                12.1 watts
> > 14.100        11 watts                12.5 watts
> > 18.100        11 watts                12.1 watts
> > 21.100        11 watts                12.6 watts
> > 24.900        10.5 watts              13.2 watts
> > 28.200        9 watts         12.3 watts
> >
> > I was hoping for the full 15 watts... I
> > note that some of the bands hit 2.50 amps which sets off the high current.
> > Usually I get high current flashing but not consistently.
>
>The K2 is rated for only 10 watts output. The 15 watts is available on SOME
>bands if you have a full 13.8 volts on the supply line. That's the margin
>Elecraft designed in to be sure every K2 meets the spec of at least 10 watts
>out.
>
>So you seem to be a bit low on 28.2, but most power meters are doing well to
>be accurate within 20%, so your readings are not surprising. Ten meters us
>usually the band with the lowest power output.
>
>You WILL get a "high current" with the limit set to 2.5 amps. If you want to
>open 'er up all the way on all bands, a typical K2 may draw more than 3 amps
>on some bands.

73, Chas, W1CG