[Elecraft] Transverter issue with K2

[Don Wilhelm]

  Phil,

Making a few guesses about how you have reported the situation, I would 
say that you may have the XV50 input attenuator set incorrectly.

I would suggest setting the K2 power for 5 watts - then with that drive 
level, adjust the XV50 input attenuator to produce 20 watts output.  
Then see if you have smooth power control.

Since you only need 10 watts from the XV50, you might want to go one 
step further to obtain a greater range of power control - Turn the XV50 
input attenuator down a bit, and then set the K2 power output for 8 
watts (the max you should drive the XV50 with) - Set the XV50 input 
attenuator for 20 watts at that 8 watt input.  You should then obtain 10 
watts from the XV50 with 4 watts out of the K2, and you will still be 
able to get 20 watts from the XV50 when running with your amp off-line.

If you are driving the XV50 from a K2/100, the power level steps are 10X 
more coarse than with the base K2 alone.  In that case, power the base 
K2 from the coaxial DC power connector, and when running the XV50, turn 
off (or unplug) the power to the KPA100 - that will allow 10 times finer 
steps in power control.

73,
Don W3FPR

On 6/18/2011 6:38 PM, Phillip Shepard wrote:
> I have a K2 (without a K60XV) and an XV50.  I am having some issues with
> power output.  After I turn on the K2/XV50 pair (or often after I come out
> of menu mode), the power output LEDs on the XV50 don't light with tune
> activated (or the keyer action).  The K2 power control is fully CCW.  If I
> turn up (CW) the K2 power control, the 20W power out LED lights upon tune.
> Turning the K2 power control back to minimum leaves the XV50 power out at
> 15W or 20W, and the action seems normal then; except that I need to be able
> to turn the power out down to 10W so that I don't over drive an external TE
> Systems 170W brick amplifier.  As far as I know, I followed the jumper
> settings in the XV50 assembly manual for the "Elecraft K2 with no K60XV"
> section.  The PA is turned off.  What do I need to do to get smooth power
> control that is settable to 10W out of the XV50?  Thanks.
>
> 73,
>
> Phil NS7P
>
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