RF gain calibration

[Gary, W7TEA]

Just bought a second K3 and thought I'd check the S meter calibration.  Using a XG-2, 50uv read S-7 but before going further I ran the RF gain calibration in the K3 utility. I did it four times.  When I chose to "use the signal source" the calibration would conclude and the RF gain control and S meter seemed to operate normally.  When I turned the rig off and then back on, the RF gain control became nearly inoperable (full CCW would move S meter only up to S-5).  When I chose "use factory default"  the calibration seemed to be remembered after restart and the RF gain control worked normally.  I was using K3 Utility Mac version 1.4.1.8

I remember a similar situation a few years back but a newer version of the K3 utility addressed it.  Is this a known problem?  I didn't find any recent posts about it.

73,  Gary W7TEA

[Bill W4ZV]

Gary, W7TEA wrote

Just bought a second K3 and thought I'd check the S meter calibration.  Using a XG-2, 50uv read S-7 but before going further I ran the RF gain calibration in the K3 utility. I did it four times.  When I chose to "use the signal source" the calibration would conclude and the RF gain control and S meter seemed to operate normally.  When I turned the rig off and then back on, the RF gain control became nearly inoperable (full CCW would move S meter only up to S-5).  When I chose "use factory default"  the calibration seemed to be remembered after restart and the RF gain control worked normally.  I was using K3 Utility Mac version 1.4.1.8

I remember a similar situation a few years back but a newer version of the K3 utility addressed it.  Is this a known problem?  I didn't find any recent posts about it.

This was a problem (i.e. not saving the RF Cal constants) with the Windows Utility last September which was corrected in an October update of the utility.  I have no idea about the Mac Utility but your description sounds identical.  If you have an older version of the utility, try using that.

73,  Bill