[Elecraft] K3: Automated Transmit Gain Calibration at 5 W, 50 W, and 1 mW

[Ken K3IU]

Hi Dick:
I just tested here and if power control set to any 5.x > 5.0, the test 
fails with the following messages in the log:
==============
Power set to 5.1:

Calibrating at 1.900 MHz
Power did not settle
Sample values:
  5.2 W ;
  5.0 W ;
  5.2 W ;
  5.0 W ;
5 Watt calibration failed.
==============
Power set to 5.2:

Starting 5 Watt calibration.
Calibrating at 1.900 MHz
Unexpected response "DB  5.2 W ;" to "DB;". State 127
5 Watt calibration failed.
====================
Power set to 5.6:

Starting 5 Watt calibration.
Calibrating at 1.900 MHz
Unexpected response "DB  5.4 W ;" to "DB;". State 127
5 Watt calibration failed.
======================
Power set to 5.9:

Starting 5 Watt calibration.
Calibrating at 1.900 MHz
Unexpected response "DB  5.9 W ;" to "DB;". State 127
5 Watt calibration failed.
Starting 5 Watt calibration.


73, Ken K3IU
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dick Dievendorff wrote:
> This is interesting, I'll fool with this.  I don't know why the
> pre-calibration power setting would affect the automatic calibration,
> because the power is set by the calibration routine to 5 or 50 watts or 1
> milliwatt (on each band) before any transmission.  
>
> 73 de Dick, K6KR
>
>
> -----Original Message-----
> From: Dave G4AON [mailto:elecraft at astromag.co.uk] 
> Sent: Saturday, December 27, 2008 2:26 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3: Automated Transmit Gain Calibration at 5 W, 50
> W, and 1 mW
>
> Dick, nice utility. I've noticed an error can occur if the K3 is set to
> lowish power when you start the calibration run. I had power set to 5.6
> Watts and the 5 Watt cal routine failed. Setting the power to 35 Watts
> allowed it all to run correctly. Apologies if this has already been noted.
>
> 73 and all the best for 2009
> Dave, G4AON
> K3 #80 f/w 2.76
>
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