[Elecraft] K2 KPA100 SWR Bridge Readings Way Too High

[Dick Lamb]

Yes, smooth, complete control on power level from 1 W to 100 W, and the K2
power display and SWR track closely with my external meter.  I think
everything is working perfectly.

Thanks again.

73
Dick, K0KK


On Tue, Oct 3, 2017 at 8:54 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:

> Dick,
>
> With that corrected, do you have some semblance of power control?
> You should, but there are other pieces of the KPA100 wattmeter sending the
> VRFDET signal back to the base K2 MCU that could be producing a problem
> with the power output.
>
> 73,
> Don W3FPR
>
>
> On 10/3/2017 9:49 PM, Dick Lamb wrote:
>
>> Don,
>>
>> I found the problem:  the short wire that connects the ungrounded side of
>> C1 to the SO259 jack had a poor solder connection.
>>
>> I figured that since C1 wouldn't tune, there had to be a problem in that
>> bridge circuit prior to U5.   I started tracing each component's
>> connections with my Ohmmeter, and I finally discovered that the ungrounded
>> solder pad for C1 didn't connect.
>>
>> Thanks for your help, Don.  You're a terrific resource and your
>> extraordinary efforts and patience in helping bewildered folks like me are
>> really appreciated.
>>
>>
>>
>