K3 Beta Firmware Release -- MCU Revision 2.13

[wayne burdick]

K3 beta-test firmware revision 2.13 is now available. Full details
appear below and in the release notes.

The use of beta-test firmware is encouraged, but optional. Please send
any problem reports to [hidden email].

For instructions on how to obtain and load beta firmware, please see:

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

73,
Wayne
N6KR

* * *

MCU 2.13 / DSP 1.83, 7-3-08

New Features:

* MEMORY ERASE: During memory recall or store, tapping CLR erases
   the present numbered memory (00-99) and flashes "ERASED". You can
   rotate VFO A to select and erase any number of memories.

* POWER-UP KEY/PTT PROTECTION: If any external device attempts to key
   the transmitter within 2 seconds of power-up, "ERR KEY" or "ERR PTT"
   will be shown on the VFO B display, and transmit will be inhibited.
   This applies to KEY IN, DOT, DASH, PTT, vox, or computer-initiated
   transmit (TX or KY commands). It should prevent accidental transmit
   during power-on when a computer, keyer, or other device is powered-up
   at the same time as the K3. Once all keying/PTT/vox activity has
   stopped, the message disappears, and normal transmit activity can
   be resumed.

Miscellaneous:

* RATE, FINE, and COARSE VFO tuning controls are all now saved
   per-mode rather than per-band/per-memory.

* ANTENNA CONTROLS are all now saved per-band, not per-memory.
   These include:
     - Main RX/TX antenna selection (1 or 2)
     - Sub RX antenna selection (MAIN or AUX)
     - RX ANT in/out selection
     - Preamp/attenuator settings for RX ANT ON and RX ANT OFF
     - DIGOUT1 menu parameter setting for ANT1 and ANT2

* PTT RLS MENU ENTRY (PTT release delay). This menu entry
   allows the the operator to specify a delay from release of PTT
   to exit from transmit in voice and audio data modes. Not
   applicable to CW, FSK-D, or PSK-D. The default is 0. A higher
   value may be needed in ARQ and similar data modes, where the
   transmit DSP “pipeline” must be fully processed before the
   carrier is dropped.

* NARROW CW/DATA FILTERS (100/50 Hz): Corrected distortion and
   loss issues.

* SYNTHESIZER: VCO CAL improvements related to “ERR VCO” and
   “ERR PL1” error messages.

For software developers:

* '$' character in CAT commands targets the sub receiver. At
   present only the AG$ command is implemented (sub AF gain, e.g.
   AG$;  AG$050;).

* "FI" command provides last four digits of the K3’s exact I.F.
   center frequency, in Hz. For example, if the selected filter
   has an offset of 0.00 and is not shifted, the I.F. is exactly
   8215000, and “FI;” will return “FI5000;”.

* "MD" COMMAND DURING “TUNE”: For the duration of TUNE, the MD
   command will return the operating mode that was in effect at the
   time TUNE was activated, not CW mode. This should fix a problem
   with third-party panadapters that may have seen TUNE as a mode
   change to CW.

Sub receiver:

* KRX3 MENU ENTRY: Settings now include NOT INST, ANT=BNC, ANT=ATU.
   When the sub receiver is installed, the operator must select one
   of the two “ANT” settings based on what is connected to the KRX3’s
   “AUX RF” input: the KAT3’s non-transmit antenna (ANT=ATU) or the
   rear-panel AUX RF BNC jack (ANT=BNC).

* BSET-MODE ANT1/2 ICONS:  When the sub receiver turned on, you
   can use BSET mode to view or change the sub’s antenna assignment:
   MAIN (sharing the main receiver’s antenna) or AUX (using the sub’s
   AUX RF input). When AUX is selected, the ANT1/2 icons will either
   turn off (if ANT=BNC was specified for in the KRX3 menu entry)
   or one of them will be on (if ANT=ATU was specified).

* SUB RX FILTER SETUP: In menus, toggling between RF and SUB and
   switching filters or modes now properly sets up sub if applicable.
   This allows the operator to hear the effect of any changes on the
   sub receiver’s own filters (if SUB AF GAIN is set so it can be
   heard). NOTE: You must turn the sub receiver ON before entering the
   menu if you want to listen to the sub during filter changes.


---

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[Bob Cunnings NW8L]

With this version CW mode quick memories come up as CW reverse when
recalled - in the six meter band only.  Returning to beta 2.10
restores normal operation. Can someone else confirm this?

Bob NW8L
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