[Elecraft] K3: RF gain settings forgotten in utility cal routine when using XG-2

[Scott Ellington]

Has this been resolved?

I had a similar problem with the current utility and firmware as of 26 Sept.  I had previously calibrated the S-meter to the XG2, then a few day later it was town from S9 to S6.  I'm not aware of anything I might have done in the meantime to affect calibration.  I recalibrated it, which resulted in OF=18 and SC=14.  Unfortunately, I did not record the values for the first calibration.  I didn't measure MDS.

Scott   K9MA

K3 4657


On Sep 26, 2010, at 9:51 AM, N. Munro wrote:

>  Stephen
> I'm also having problems doing an RF Gain Cal using the latest K3 
> Utility (and a few other recent versions).
> Various error codes are displayed and the Rx sensitivity is well down 
> after I cycle the Power switch off and back on again. The S meter only 
> reads about S5 and the MDS drops from -136 dBm to about -120 dBm. Like 
> you, restoring the Factory Default settings gets me back to normal.
> 
> I have gone back to K3 Utility Ver 1.2.8.10 and everything works as it 
> should. The matter has been referred to Gary Surrency at Elecraft 
> support and I would expect a reply tomorrow. For info, I have completely 
> disconnected the P3 and the RS232 cable from the PC is run straight into 
> the K3.
> 73
> Norman - GM4KGK
> 
> -----------------------------------
> 
> /All of a sudden, I'm having trouble with the K3's receiver following RF gain
> calibration and S meter setting.  The RF gain calibration using the utility
> leaves the receiver with S9 at -73dBm (using ZG-2) but when I turn off and
> then on the K3 the S meter drops to S7 and the RF gain control, although
> reducing the perceived signal strength, does not cause the S meter to rise.
> 
> The agc has completely default settings throughout.  For the purposes of the
> calibration, the K3 is directly connected to the PC, not through the P3.
> I'm running the latest firmware and K3 utility.
> 
> Having taken a break from typing this, I have only now just found that if I
> choose to 'Use factory default RF Gain calibration data' then all is well,
> so is this a bug within the latest utility I wonder?
> 
> Thanks
> 
> 73 Stephen G4SJP/
> 
> 
> _

Scott Ellington
Madison, Wisconsin
USA