[Elecraft] K2: HRD Power Control Anomaly

[Don Wilhelm]

Randy,

If your K2 firmware is less than version 2.02e then the problem is with 
your K2 firmware.
If the firmware is 2.02e or greater, then HRD is the problem.  What 
version of HRD are you using?  If it is an older one, that may be your 
problem.

See the K2 Programmer's Reference.  The Extended form of the PC command 
must be used to change the power from the low range to the high range.

I don't know whether Simon has implemented the Extended version of the 
PC command in his software.  You may want to ask that question on the 
HRD forum.

I cannot check it out here, I have only the QRP K2 and no KAT100.

73,
Don W3FPR

Randy Moore wrote:
> I'm operating my K2/100 (KPA100+KAT100 in EC2) from Ham Radio Deluxe, 
> which works just great.  But just now I was playing around with the HRD 
> power control slider and discovered some anomalies. 
>
> If I set the power on the K2 to say 50w, then move the HRD power slider 
> down to < 11 w, the LCD power readout on the K2 follows the HRD slider 
> down appropriately, but the KAT100 PWR RANGE LED stays in HIGH.  If I 
> then transmit, the power is actually what I set it to (<11w).  So does 
> that mean that I'm driving the KPA100 at QRP levels instead of using the 
> K2 PA and bypassing the KPA100???  Moving the slider to other power 
> levels (without moving the K2 power control) results in the same thing - 
> power out follows the HRD slider, but the PWR RANGE LED stays at HIGH no 
> matter if the power is set to <11w.
>
> Now if I start with the K2 power control at <11w, first of all, HRD 
> displays 10x the actual power setting (i.e., 100 for 10w).  That's easy 
> to get used to.  But if I crank the HRD slider up beyond 10w (e.g., HRD 
> slider to 150 or 15w), the actual power output, and the K2 LCD power 
> display, go to 15w, but the KAT100 PWR RANGE LED stays in LOW.  Again 
> does that mean that I'm driving the K2 PA to 15w and not going through 
> the KPA100???
>
> Is this a HRD "issue" or a K2 CAT command issue???
>
> Kinda strange!
>
> 73,
> Randy, KS4L
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