[Elecraft] K3 S Meter

[Lyle Johnson]

> The manual is correct if you wish to use "nor" mode for the S Meter.
> 
> If you wish to use ABS mode, then you need set PRE OFF and ATT OFF 
> before adjusting CONFIG: SMTR SC and CONFIG:SMTR OF. 

To be clearer, if you calibrate according to the manual and *then* 
select ABS mode, the S meter will read about 10 dB low (approximately 2 
S units).

If you calibrate with PRE and ATT OFF and *then* select NOR mode, the S 
meter will only be "accurate" if PRE and ATT are OFF.

The DSP firmware corrects for PRE and ATT gains in its calculations in 
ABS mode; it does not correct for these in NOR mode.

73,

Lyle KK7P