[Elecraft] K3 Beta Firmware Release -- MCU Revision 2.15

[wayne burdick]

K3 beta-test firmware revision 2.15 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 k3support at elecraft.com. For instructions on how 
to obtain and load beta firmware, please see:

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

73,
Wayne
N6KR

* * *

MCU 2.15 / DSP 1.84, 7-8-08

* MEMORY RECALL ON 6 M (CW REV, etc.): Corrected recall of
   CW normal/reverse selection and other parameters on 6 meters.

* 50 AND 100 HZ bandwidths are now available in DATA A (for use
   with PSK31 and other narrow modes).

* SYNTH TUNING CORRECTED ON 80 M: Downward tuning of the VFO was 
sometimes
   leading to loss of receive and/or transmit at certain frequencies.

* SYNC DATA: Selecting sync data or “-S” now ensures that the
   same crystal filter will be used for both RX and TX -- either 2.7 or 
2.8 kHz.
   (Sync data mode, enabled by assigning PF1 or PF2 to CONFIG:SYNC DT, 
can be
   used to minimize the error rate of AMTOR, PACTOR, ARQ, and similar 
modes.)
   While -S is in effect, the receive crystal filter cannot be changed 
with
   XFIL, and SHIFT/LOCUT/HICUT are unavailable. WIDTH can still be 
changed,
   but it will affect only the DSP IF, not the crystal filter. The RX
   and TX first I.F.s will thus remain identical, a requirement for -S 
operation.


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