[Elecraft] K3 Beta firmware rev. 2.67: Main/Sub AF balance control; AGC-off AF limiter

[Alexandr Kobranov]

Excellent job, Wayne!
SUB/MAIN ballance and easy ANT switching is really big improvement!

Many thanks,

Lexa, ok1dst
with still growing K3/10 :-)



wayne burdick napsal(a):
> K3 beta-test firmware revision 2.67 (with DSP rev 1.96) is now 
> available. Please send any problem reports to k3support at elecraft.com. 
> For instructions on how to load beta firmware, please see:
> 
>   http://www.elecraft.com/K3/k3_software.htm
> 
> Full details appear below.
> 
> 73,
> Wayne
> N6KR
> 
> * * *
> 
> MCU 2.67 / DSP 1.96, 11-18-2008
> 
> * MAIN/SUB BALANCE CONTROL:  If CONFIG:SUB AF is set to BALANCE,
> then the SUB AF GAIN control becomes a main/sub AF balance control when
> the sub receiver is turned on (including diversity mode). In this case 
> the MAIN
> AF GAIN controls the AF gain level for both receivers. When SUB AF is at
> 12 o’ clock, both receivers will be at full volume (main left, sub 
> right). If SUB AF
> is rotated fully counter-clockwise, you’ll hear only the main receiver. 
> If it’s
> rotated fully clockwise, you’ll hear only the sub receiver. At 
> intermediate settings
> you’ll hear both. A BALANCE control is very useful for contesting and split
> operation. But it can also save a lot of AF gain control tweaking (i.e., 
> matching
> main and sub), since MAIN AF controls both main and sub receiver audio.
> 
> * AGC-OFF AF LIMITER: An adjustable AF output limiter has been added
> for operators who turn AGC off. This can protect your ears if a large 
> signal
> appears. Signals or noise above the threshold will sound highly distorted
> due to the limiting action, reminding you to back down the AF or RF gain.
> The associated menu entry, CONFIG:AF LIM, defaults to NOR. Typical
> settings for those who often turn AGC off are 17 to 23, but some 
> experimentation
> will be required.
> 
> * EASY SUB RX ANTENNA SWITCHING: A hold of RX ANT will alternate
> between MAIN and AUX for the sub receiver’s antenna, if the sub is 
> installed.
> This is faster than going into BSET to switch the sub antenna.
> 
> * SUB ANT SAVED SEPARATELY FOR DIVERSITY/NON-DIVERSITY:
> At many stations, the sub receiver’s AUX antenna is only used in diversity
> mode. The K3 now remembers which sub RX antenna setting you use
> in diversity and non-diversity cases, so you won’t have to use BSET as 
> often.
> 
> * DIGOUT0 SIGNAL (ACC connector): This now behaves as described in the
> owner's manual. When a transverter band is selected that is configured for
> low-power operation (i.e., .01-1.50 mW, and using the KXV3’s XVTR IN/OUT
> jacks), DIGOUT0 provides a low-resistance path to ground that could be 
> used to
> activate a small relay or other circuitry. At all other times the 
> DIGOUT0 line
> will float (high-Z). If all transverter bands are configured for low 
> power, then
> DIGOUT0 can be used as a “transverter band selected” signal.
> 
> * POWER LEVEL ON XVTR AND HF BANDS: Switching between HF and
> transverter bands no longer modifies the present HF band power setting.
> 
> 
> ---
> 
> http://www.elecraft.com
> 
> 
> 
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