> Don ..
>
> I realized that as I was redoing the adjustments one more time -- no
> separate S-meter adjustments for the Sub. I'll start from scratch.
>
> But the results do seem a bit odd. As it now sits on the Main (and
> this is after mistakenly tweaking S_meter cal on the Sub), a 50uV
> signal yields an S-7 with preamp off and S-9 with preamp on, with the
> meter in Nor mode. In Abs mode, I see S-7 with preamp off and S-6
> with preamp ON.
>
> It's certainly possible (most likely?) that there's a cockpit problem
> here, but the results I'm getting don't look right. Prior to all of
> this, there was no change in S-meter reading when activating the
> preamp in "abs" mode.
>
> Grant/NQ5T
>
>
> On Nov 4, 2009, at 3:58 PM, Don Wilhelm wrote:
>
>
>> Grant,
>>
>> Re-do the S-meter Cal on the main receiver. There seems to be some
>> confusion on this topic, but there is only *one* set of S-meter
>> calibration settings (at least that is the way it is right now). So
>> when you thought you were calibrating the subRX S-meter, you likely
>> messed up the settings for both the main RX and the sub - I can't
>> say for certain but I think it has something to do with the 3 dB pad
>> and athe variety of ways to connect the subRX antenna..
>>
>> 73,
>> Don W3FPR
>>
>> Grant Youngman wrote:
>>
>>> Did we ever ever get anything final on the "subtle bug" that may
>>> have created a problem with RF Gain calibration in the Mac version
>>> of K3 Utility?
>>>
>>> I used the new test version sent out a few days ago, calibrated to
>>> an XG2 on 20M. Didn't have to adjust S-Meter cal on the Main
>>> receiver, but did cal the Sub S-Meter, which I'd ignored up until
>>> now. All seemed well, until I powered on the K3 today, and
>>> noticed what seemed to be "scotch" S-Meter readings. A recheck
>>> with the XG-2 shows only about S-7 with the 50uV test signal.
>>>
>>> Grant/NQ5T
>>>
>>>
>
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