K3 beta-test firmware revision 4.02 (with DSP rev. 2.60) is now
available. See full release notes below.
The most significant addition is "CW+" mode. CW+ provides extremely
fast break-in (receive recovery between code elements up to about 70
WPM) as well as VOX CW operation at speeds up to 100 WPM. We added CW+
mode primarily for high-speed (QRQ) operators, but the new, faster
break-in applies at slower speeds, as well. Please give it a try.
NOTE: There are significant limitations to CW+ mode at present, as
described below. Please review them carefully.
Please send any questions to k3supp...@elecraft.com. For instructions
on how to load beta firmware, see:
http://www.elecraft.com/K3/k3_software.htm
73,
Wayne
N6KR
* * *
MCU 4.03 / DSP 2.60, 6-10-2010
* 75 BAUD (100 WPM) RTTY SUPPORT: The built-in
encoder/decoder (DATA/FSK-D) now supports both 45 and
75 baud. To select the desired rate, hold the DATA MD
switch, then rotate VFO A.
* ULTRA-FAST BREAK-IN AND QRQ CW (“CW+”):
If you set CONFIG:CW QRQ to ON in the menu, the K3 will
provide extremely fast break-in at all CW speeds. It will also
allow both the internal keyer and external keying to work
at up to 100 WPM. (Be sure to turn on both QSK and VOX.)
The “+” mode icon turns on when CW+ is in effect.
Tip: You may want to assign the CW QRQ menu entry to
a programmable switch function (e.g., PF1) for quick access.
This can be done by locating the CW QRQ menu entry, then
holding PF1 until you see “PF1 SET”.
Note 1: There are limitations to QRQ CW mode at present.
You cannot use SHIFT, or turn on RIT, XIT, or SPLIT. However,
you can still use splits, in effect, if you have the sub receiver
installed: Turn the SUB on, and use VFO B as the receive VFO.
(In a subsequent firmware release, RIT/XIT will be usable over
a small range in QRQ mode.)
Note 2: If you use CONFIG:TX DLY to set external keying
delay, you may need to adjust its setting for QRQ CW use. Also,
any increase in the default (8 ms) may decrease the maximum
available CW speed.
* AF BALANCE CONTROL IMPROVED: The SUB AF control
can be used as a main/sub RX balance control (see CONFIG:
SUB AF). Previously, when the control was rotated fully
clockwise, main receiver audio would not be fully turned off.
This has been corrected.
* ADDED ERROR CODE “ERR RXF”. This message is flashed
if you switch to a crystal filter that is too wide for the present
settings. For example, ERR RXF will flash if you are in QRQ
CW mode and select a filter wider than 2.8 kHz. To correct this,
you'll need to turn off wider-bandwidth crystal filters either
manually (using CONFIG:FLx ON) or via K3 Utility.
* FIXED FSK-D STUCK TONE: Occasionally, sending RTTY
using the keyer paddle (FSK-D) would leave sidetone on.
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