K3 beta-test firmware revision 4.58 (with DSP rev. 2.80) is now
available. This release includes improved built-in CW text decode.
Please send any questions to k3supp...@elecraft.com. For beta firmware
download instructions, see:
http://www.elecraft.com/K3/k3_software.htm
73,
Wayne
N6KR
* * *
K3 MCU REV. 4.58 / DSP REV. 2.80, 11-7-2012
* KEYER PADDLE ENABLED IN FSK-D/PSK-D MODES ONLY IF TEXT DECODE IS ON:
Those using FSK-D/PSK-D via with a computer requested that the paddles
be disabled when the K3's internal text decode is OFF so that hitting
the paddles accidentally doesn't interfere with PC-based transmission.
* CW DECODE IMPROVED: The CW decode algorithm now includes its own AGC
system, independent of regular AGC threshold/slope/decay settings.
Decode of element spaces vs. word spaces adjust slightly to improve
rate of copy on average code samples.
CW DECODE TIPS:
- Use the TEXT DEC switch and VFO A to set CW decode threshold. We
recommend using THR 2 or 3 for most signals, and THR 1 for very weak
signals. These fixed settings usually work better than AUTO.
- Also use TEXT DEC and VFO B to turn on CW decode and select the
speed range. The CW 5-40 WPM setting is best for all but the fastest CW.
- Use a narrow WIDTH setting (50-250 Hz when possible)
- If the band is noisy, interfering with copy, try turning on the
noise blanker (NB) first to reduce the level of impulse noise.
- When there is no CW signal above the required threshold, you'll see
random characters decoded.
- Copy will vary with sending accuracy, fading, signal level,
interference, and noise. But the addition of separate CW decode AGC
definitely helps.
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