[Elecraft] KX3 Gain Calibration - Failing

[KENT TRIMBLE]

Aaron . . .

In addition to what Don says, I'd recommend setting the KX3's POWER 
control to the maximum before running the TX GAIN procedure.  I've had 
it fail when I had the output set at 5 watts.  Running it to maximum 
would then result in a successful calibration.

By the way, I always do a TX GAIN calibration after each firmware 
upgrade, although I'm not sure it's necessary.

73,

Kent  K9ZTV




On 1/2/2017 1:37 PM, Don Wilhelm wrote:
> Aaron,
>
> The most common reason for a failure in the KX3 TX Gain Calibration is 
> a dummy load that does not present a good 50 ohm non-reactive load.
> You can check your dummy load at 28 or 50 MHz with an antenna analyzer.
>
> You apparently did not disconnect the KXPA100 when running the KX3 TX 
> Gain Cal procedure.  Remove the KXPA100 and run with the KX3 and the 
> dummy load only.
> If you do the manual procedure in the KX3 manual, it should be good 
> for all bands where it passed.  If you used KX3 Utility, it quits on 
> the first band that produces an error.
>
> After you get a successful TX Gain Calibration with the KX3 only, then 
> do the TX Gain Cal for the KXPA100 as indicated in Appendix B of the 
> KXPA100 manual.  Your dummy load must be rated for 75 watts or greater.
>
> 73,
> Don W3FPR
>
> On 1/2/2017 1:52 PM, Aaron Marroquin wrote:
>> I have been a lurker on the reflector for almost a year and this is my
>> first email to request guidance.
>>
>> I have a KX3 and a KXPA100 and with the recent thread about running a
>> calibration I figured I needed to do likewise. The amp is a new 
>> addition to
>> my setup so I am still learning the details. Anyway, while running 
>> the KX3
>> Utility I get a failure during the calibration process (the output is
>> below). The amp is in bypass mode and I am using an MFJ-260C for the 
>> dummy
>> load attached to ANT1.
>>
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