K3 beta firmware rev. 3.10: 100 WPM CW; misc. improvements

[wayne burdick]

K3 beta-test firmware revision 3.10 (with DSP rev 2.15) is now
available. For details, see the release notes below.

Please send any problem reports to [hidden email]. For
instructions on how to load beta firmware, please see:

       http://www.elecraft.com/K3/k3_software.htm

We recommend that you use the latest revision of K3 Utility, which can
also be found on the K3 software page. In the newest release, K3
Utility allows you to view and edit the K3's CW/DATA message memories
(M1-M4).

73,
Wayne
N6KR

* * *

MCU 3.10 / DSP 2.15, 4-15-2009

* FASTER EXTERNAL CW KEYING SPEEDS : When transmit is
pre-enabled using PTT (i.e., with a footswitch or with PTT under
computer
control), external keying speeds up to 100 WPM are now possible. (When
using CW with VOX, the recommended maximum is still 60 WPM.)
Notes: (1) If you use a computer to control PTT, and wish to do this via
the K3’s serial I/O jack, refer to the CONFIG:PTT-KEY menu entry.
(2) The maximum attainable CW speed may be lower during heavy
use of RS232 polling. Also, higher settings of the transmit delay menu
parameter (CONFIG:TX DLY) will also reduce maximum CW speeds.

* TRANSVERTER BAND DECODE CHANGE: The K3 can control up to
9 transverter bands via either a serial output (auxBus) or parallel
(BAND0-3). The parallel outputs can select all 9 transverter bands, but
the
auxBus is now limited to addresses 1-7, matching Elecraft’s XV-series
transverters. (In all cases, use CONFIG:XVn ADR to specify the address.)

* NO AFX KEYING ARTIFACT IN RIGHT AUDIO CHANNEL:
Previously, a short burst of audio might be heard in the right audio
channel when keying the transmitter with MAIN:AFX MD set to DELAY x.
This was most likely with a strong signal or noise in the passband.

* CW VOX OFF BY DEFAULT ON POWER-UP: Some stations using PC
control may inadvertently key the K3 in CW mode on power-up if VOX CW
is in effect. If this is an issue at your station, locate the CONFIG:CW
WGHT
menu entry and tap '4', changing VOX NOR to AUTO OFF. This will make
CW VOX default to OFF when the K3 is turned on.

* SQUELCH CONTROL MORE RESPONSIVE: When rotating the RF/SQL
pot or changing SQ MAIN/SUB menu entries, squelch updates more quickly.

* PER-BAND POWER SAVED ON VFO A/B SWAP: Per-band power
settings (CONFIG:PWR SET=PER BAND) are now preserved if
an A/B swap is done with the two VFOs set to different bands.

* RIT OFFSET PRESERVED ON BAND CHANGE: If CONFIG:SPLT SV
is set to YES, both the state of RIT/XIT and the present offset will be
saved on any band change. (Previously, the offset was set to 0 on band
change, which was inconvenient when alternating between two different
bands and using RIT or XIT.)

* SPURIOUS SIGNAL REMOVAL AND SUB-RX FREQ SHIFT: The use
of spurious signal removal (CONFIG:SIG RMV) for the main receiver no
longer causes a small shift in frequency of the sub receiver when a
mapped-out spur segment is encountered.

* COARSE TUNING EFFECT ON VFO COUNTS/TURN: On exit from
COARSE tuning, the normal VFO counts per turn value (CONFIG:VFO
CTS) is now correctly restored.

For Software Developers:

* SQ$ ADDED (sub-RX squelch control). SQ and SQ$ work for both FM
and non-FM squelch. Squelch control range via CAT or pot is now 0-29.
This is different from the K2’s SQ control range.


---

http://www.elecraft.com

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