[Elecraft] KX-3 TX current draw?

[Drew Arnett]

Good point, Victor.  And why I included that SWR reading.  Other bands
read fine.  I have high confidence in the load and adapter (tried
swapping both just in case).  I could measure the load and adapter the
next time I'm in the lab at work if I want to be absolutely thorough,
but it is a microwave load and just adapting from BNC to N (no coax).

SWR looks fine on other bands.

Thanks,

Drew
n7da

On Sat, May 9, 2020 at 4:57 AM Victor Rosenthal <k2vco.vic at gmail.com> wrote:
>
> I think 1.6:1 is high for that kind of dummy load, if it's in good shape. Should be close to 1:1.
> Anyway, you can't really say there is a problem unless you have a better match. Current draw is sensitive to mismatch.
> --
> Vic
>
> On May 9, 2020 2:32:15 AM GMT+03:00, Drew Arnett <arnett.drew at gmail.com> wrote:
>>
>> Walter,
>>
>> 50 MHz TX constant 4 W carrier measures 13.53 V on DMM (outside the DC
>> power plug), 13.3 V on KX3 meter, 2.9 A on KX3 meter and 1.6 to 1 VSWR
>> on KX3 meter.  Microwave dummy load with BNC to N adapter.
>>
>> I didn't measure all of this when the rig was new, so have no baseline
>> to know what is normal.  :-(
>>
>> Thanks,
>>
>> Drew
>> n7da
>>
>> On Fri, May 8, 2020 at 11:19 PM Drew Arnett <arnett.drew at gmail.com> wrote:
>>>
>>>
>>>  What do you see for current draw on the KX-3?  Manual says 1 to 2 A typical.
>>>
>>>  I'm seeing 3 A at less than full power on one band.  Yikes!  Makes me
>>>  wonder if the repair shop is open?  Elecraft website says hunkered
>>>  down and mostly work from home.
>>>
>>>  Thanks and best regards,
>>>
>>>  Drew
>>>  n7da
>>
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