K3 firmware rev. 4.81 (with DSP rev 2.82) is now available as a beta release.
Highlights of this release:
* RIT can now be turned on/off during transmit: (Note: If RIT is turned on or
off during transmission of a CW character, the length of one code element may
be affected. This will be corrected in a future release.)
* 10 and 18 MHz are now available as transverter I.F. bands. 10 MHz is
particularly useful as an I.F. for VLF and LF transverters, e.g. for the
600-MHz band (~475 kHz). This is because 10 MHz OCO's (oven-controlled
oscillators) are relatively inexpensive, and can serve as the local oscillator
for a home-built transverter.
* That pesky RTTY 45/75 baud bug has been fixed. The FSK-D/AFSK-A baud rate is
now global, meaning that one setting applies in all cases. The band rate is set
by holding DATA MD, selecting FSK-D or AFSK-A using VFO B, then selecting the
baud rate using VFO A.
* RTTY/FSK transmit improved: In FSK-D mode using an PC-generated FSK input,
the K3 no longer exhibits DSP errors (ERR DSE) or loss of communications.
Previously, these may have occurred when the K3 was sent too many serial
(RS232) commands.
* A number of bugs in Remote Rig mode have been fixed. See release notes
(accessible from within K3 Utility) for a full list.
* You can now set the crystal filter lower edge in CW mode to 0.1, 0.2, or 0.3
kHz above zero beat. The default is 0.2 kHz. The 0.1-kHz selection provides
enhanced bass response, but may allow you to hear a low-pitched
opposite-sideband signal when you're tuned near very strong signals. The
0.3-kHz selection may be preferred by some operators in extremely strong-signal
environments. To change the setting: Select CW mode, then go into MENU:RX EQ
and tap '0' (CWT) to choose the desired XFIL LO value.
For instructions on how to load K3 beta firmware, see:
http://www.elecraft.com/K3/k3_software.htm
73,
Wayne
N6KR
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