[Elecraft] New K3 Firmware Update (MCU rev 1.53, DSP rev 1.47)

[wayne burdick]

Hi all,

We've just posted updated firmware on our FTP site. Be sure to install 
the latest version of our firmware downloader (K3 Utility), revision 
date 12-9-07, before you do the upgrade.

Here are the changes in this revision (within K3 Utility, use 
"Help"/"K3 Firmware Release Notes"):

MCU 1.53 and DSP 1.47, 12-19-07

   * TX INH menu entry added (Transmit Inhibit). This can be used in 
multi-transmitter stations
     to control access to station resources such as amplifiers or 
antennas. Default is OFF
     (no inhibit function; pin 7 is then an output used as XVTRON). If 
set to LO=INH or HI=INH,
     operator must supply an external TTL or open-collector/open-drain 
driver (a pullup to 5V
     is required in this case).When the rig is inhibited, the TX LCD 
icon flashes slowly (same
     as TX TEST mode). Using transmit-start switches (XMIT, TUNE, ATU, 
M1-M4) results in
     a brief "TX INH" message on VFO B. The key, keyer paddle, /PTT, and 
TX via PC
     commands are all nonfunctional.

   * S-meter linearization above S9 has been improved. (Much greater 
accuracy is
     possible via an automated calibration algorithm. This is still in 
development.)

   * LINE IN function now behaves correctly on power-up.

   * Receive filter controls (SHIFT, WIDTH, etc.) and switches (XFIL, 
etc.) are locked out during
     transmit.

   * TRANSVERTER SUPPORT:
        1. The XVn OFS menu entry is functional (+/- 9.99 kHz offset, 
per transverter band).
        2. Elecraft XV-series transverter address is being sent via the 
auxBus.
        3. M->V and V->M now work with transverter bands.
        4. Direct Freq Entry works between HF and transverter bands. 
Examples of direct
           freq entry on transverter bands: 144, 144.2, 144.23, 144.235.

73,
Wayne
N6KR

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