[Elecraft] RF gain calibration (K3 Utility for Mac)

[Don Wilhelm]

Dick,

The RF Gain calibration provided by K3 Utility is entirely different 
than the S-meter calibration.
Do the S-meter calibration (see the manual) after running the RF Gain 
calibration.  The only commonality is that the XG2 (or other source of a 
50 uV signal) is used for both.

If you want S-meter readings independent of the preamp and attenuator 
settings, you must set CONFIG: SMTR MD to AbS - if set to 'nor', the 
attenuator and preamp will change the S-meter response.

73,
Don W3FPR

Richard S. Lindzen wrote:
> Dear Lyle,
>
> I've connected the XG-2 to Ant 1, and gone through the calibration 
> routine.  I've turned off the preamp (and the attenuator), and used 
> the utility to calibrate.  The s-meter still reads S7 for the XG-2, 
> though it rises to s8+ when I turn on the preamp.  This also puzzles 
> me.  When I first used the K3, I was under the impression that the 
> s-meter reading was independent of whether the preamp was on or 
> not.  Have recent firmware changes alterred this?  More likely, I'm 
> doing something wrong.  Incidentally, how close to the stated 
> frequencies are the crystals in the XG-2?
>
> 73,
>
> Dick
> KA1SA
>
> At 06:03 PM 11/1/2009, you wrote:
>   
>>> I've been having trouble calibrating with the Windows version, but 
>>> probably I'm doing something wrong.  I have an XG-2 connected to 
>>> the receive antenna input.  Does it really have to be connected to Antenna 1?
>>>       
>> Yes.  The software was written that way because it is the only 
>> antenna connection that is available on every variant of the 
>> radio.  You must use Antenna 1.
>>
>> 73,
>>
>> Lyle KK7P
>>     
>
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