[Elecraft] [K3] KXV3A fails 1 mW calibration

[Gunnar Widell]

I also have the same problem. I got this information from Elecraft 
support, but I have not been able to test yet since the radio is remote 
(Running K3 Twin with Remoterig). See below:

Connect a bnc tee to the XVTR OUT jack, and a 50 ohm load or resistor to 
one side of the tee.

Then use an RF probe to see if there is at least 0.224Vrms at the other 
side of the tee. You could use an oscilloscope to do the measurement 
too, but convert 0.224Vrms to peak to peak voltage for the scope.

Use Tune if the K3 Utility automated TX Gain calibration does not work.

Also, have a look in the manual, "Calibration Procedures" 1.0 Milliwatt 
Meter Calibration.

73 de Gunnar SM3SGP @ SK3W

Robert Bajuk skrev 2012-02-12 18:51:
> I do have the same problem with TX Gain Calibration, 5w and 50w calibration
> goes well, but 1mW calibration fails, I am getting the error something
> like: "Power set to 0.1 mW, 1.9 MHz,  TX gain calibration failed because
> transmit power did not reach the expected value".
>
> I did reload FW, EE INIT, settings restore, nothing helps.
>
> KXV3A is enabled and set to normal in config, no jumpers on W1 and W2, 50
> Ohm dummy load on XVTR Out is OK. XV144 does not work properly, I believe
> that is connected with XVTR Out problems. XVTR parameters in config are set
> correctly.
>
> Any ideas?
>
> 73 Robert
>
> 2012/2/12 Don Wilhelm<w3fpr at embarqmail.com>
>
>> Did you forget to cut the jumpers when you installed the KXV3A?
>>
>> 73,
>> Don W3FPR
>>
>> On 2/12/2012 11:22 AM, Pierfrancesco Caci wrote:
>>> I get the following error when trying the 1 mW calibration for a freshly
>>> installed KXV3A:
>>>
>>> Starting 1 milliwatt calibration.
>>> Calibrating at 1.900 MHz
>>> IsSamplingComplete: Unexpected response 'DB 0.10 MW;' to ''. State 220
>>> Calibration power settled at ' 0.10 MW;'
>>> 1 milliwatt calibration failed.
>>> Elapsed time: 19.2 secs
>>>
>>>
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