We've just posted a new revision of K3 firmware on our web site (both
MCU and DSP). Please see the release notes below.
73,
Wayne
N6KR
* * *
MCU 1.68 and DSP 1.53, 2-17-08
* MIC Source is now saved independently for voice and data modes. For
example, you
could set MAIN:MIC SEL set to LINE for DATA, and FP or RP for voice
modes.
* DATA MODE selection is now stored per-band, per-memory. This works
for both normal
and quick memories. So, you could set quick memory M3 to 14071/PSK
D, and M4 to
14083/FSK D, and still have M1 and M2 for 20-m CW and SSB setups.
* "UP" and "DN" remote control commands can now be used to adjust
operating
parameters via a PC (NB, TEXT DEC, DATA MD, NR ADJ, etc.). Add 'B'
to the
command (i.e. "UPB;" or "DNB;") to control the parameter displayed
on VFO B; otherwise,
the VFO A parameter is changed.
* Milliwatt power display now correctly shows "-9.0" dB between -8
and -10 (KXV3).
* Synthesizer control improvements (eliminated some ERR VCO cases
during VCO CAL,
and corrected a reported 30-m transmit problem).
* CW-to-PSK transmit added -- similar to CW-to-RTTY mode. This allows
the
K3 to be used for PSK31 QSOs without a computer (RX/TX text is
displayed on VFO B).
Select DATA mode, then use the DATA MD switch to select PSK D. Use
TEXT DEC to
turn text decode ON. Now, hitting the keyer paddle will convert
your CW to PSK31.
You'll hear both the CW and PSK31 signal during transmit; use MON
(monitor) to set
the audio level of the PSK31 tones. (To set the level of the CW
sidetone, switch to CW
mode and use MON.)
NOTE: The initial implementation of CW-to-PSK is experimental, and
further improvements
are planned. For now, keep these things in mind:
1. Receive: You may notice that the optimal PSK31 receive VFO
frequency is
slightly lower than the transmit frequency; an RIT setting of -5 to
-20 Hz may be needed.
One way to determine the best setting is to call CQ using
CW-to-PSK, with the VFO
set to FINE tuning mode (1 Hz steps). Before calling CQ, turn RIT
on and tap CLR to clear it.
When a station calls back, adjust RIT slowly for the text best
copy, but don't change your
transmit frequency (i.e. don't move the VFO).
2. Transmit: In CW-to-PSK31 transmit mode, ALC action is minimized
to ensure
extremely low IMD. This may result in less accurate correlation
between the selected
power level and the actual power observed on the bar graph or on an
external wattmeter.
---
http://www.elecraft.com
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