K3 beta-test firmware revision 2.78 (with DSP rev 1.98) is now 
available. See release notes below.

Please send any problem reports to k3supp...@elecraft.com. For 
instructions on how to load beta firmware, please see:

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

We also recommend that you use the latest revision of K3 Utility, which 
can also be found on this page.

73,
Wayne
N6KR

* * *

MCU 2.78 / DSP 1.98, 1-8-2009

* SIGN-ON BANNER SUPPORT (for your callsign, etc.): If you specify a 
sign-on
message (using K3 Utility), it will be displayed when you turn your K3 
on. This
might include your call sign, serial number, etc. K3 Utililty revision 
1.1.12.29 or
later is required. Click on the Configuration tab, then click on Edit 
Sign-On
Banner. Up to 22 characters can be entered. If you delete all 
characters from
the message, no banner will be shown.

Misc. Changes:

* SSB SPLIT TX AUDIO PROBLEM CORRECTED: In certain cases (ESSB,
VFO A/B on different modes, or SUB turned on), going into SPLIT mode 
would
result in no SSB transmit audio, or an incorrect transmit audio 
passband.

* VFO COUNTS PER TURN CORRECT AFTER EXIT FROM COARSE TUNING:
Previously, if you had CONFIG:VFO CTS set to 400 or 200, selecting 
COARSE
tuning would leave VFO counts/turn at 100 even after switching to 
another tuning
rate. (100 counts per turn is used for coarse tuning due to the large 
step sizes.)

* SUB/MAIN AF BALANCE CONTROL: Main and sub RX audio are now correctly
restored when the sub is turned on/off, etc. Previously, either 
receiver might
have remained muted after sub on/off when SUB AF was set up as BALANCE.

* DVR WITH COMPUTER CONTROL (HRD, ETC.): Running HRD (and some
other PC applications) no longer terminates DVR record/play. Some 
programs
were polling every second or so for the DVR’s firmware revision, which 
stops the
DVR. The K3 MCU now handles this command in all cases without DVR
interruption.

* AM DSP BANDWIDTH DISPLAY NOW SHOWS *AF* BANDWIDTH, NOT IF. We
originally showed the IF bandwidth in AM mode since some operators 
might be
thinking about the underlying AM-mode implementation (i.e., the IF 
bandwidth
has to be twice the AF bandwidth in this mode). But this was causing a 
lot of
confusion, and was inconsistent with the way the DSP bandwidth control 
works in
other modes, where the *AF* bandwidth is displayed. Also, LO and HI CUT 
show
AF cutoff points – not IF – even in AM mode. So we now consistently 
define the
function of all DSP controls as showing AF frequencies/bandwidths. 
Note: In AM
mode, tapping XFIL will still show the *crystal filter* bandwidth, not 
the DSP BW.
So if you select a 6-kHz crystal filter by tapping XFIL, you’ll see 
“FL2 6.00” displayed
(for example). But the DSP width control now be at a starting point of 
3.00 kHz.
Also see related change to “FW” remote-control command.

For software developers:

* AM-MODE "FW" COMMAND CHANGE: The filter bandwidth command (“FW”)
was reporting the IF bandwidth in AM mode (multiplying by two) which 
was confusing
for users of some PC applications. It now reports the DSP (AF) 
bandwidth in AM
mode. As with the manual WIDTH control, the IF bandwidth is set to 
approximately
twice the AF bandwidth when an “FW” set command is sent. (Note that 
“K31” mode
must be in effect in order to use “FW” to get/set actual bandwidths.)

* ENTERING SPLIT CROSS-MODE VIA "FT;": This no longer results in icon 
flash,
so no dummy SWT command is needed to cancel it. (When split is turned on
using the K3’s SPLIT switch, the cross-mode warning flash is still 
present.)


---

http://www.elecraft.com




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