[Elecraft] KPA100 and Audio Issue

Rich rwnewbould at comcast.net
Mon Apr 6 13:43:27 EDT 2020


Just to make sure that was a typo you said K2??

I did your test on my K3S and I am getting about 55 watts on the meter

Any other ideas?

Thank you so much

Rich

On 4/6/2020 13:01 PM, Don Wilhelm wrote:
> Rich,
>
> Connect an external wattmeter and a dummy load.
> Then set the K2 power to 50 watts and do a TUNE.
> What is the actual power output?  If it is much greater than 100 watts 
> (as I suspect), then you do not have power control and that says that 
> the wattmeter in the KPA100 has been damaged - likely from static 
> coming in on the feedline.
> Replace D16 and D17 in the KPA100 and the problem should go away.
>
> 73,
> Don W3FPR
>
> On 4/6/2020 11:36 AM, Rich wrote:
>> I am having an issue with distorted audio once the KPA100 kicks in at 
>> about 10-12v.
>>
>> The KPA100 is putting out 100 watts
>>
>> I have re-calibrated the radio with no change.
>>
>> I am testing with the hand mic and a dummy load.   Which should 
>> eliminate any external devices causing it
>>
>> Any suggestions as to what can be causing this issue?
>>


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