[Elecraft] K3 Beta Firmware Release: Improved CW text decode

[Guy Olinger K2AV]

Any other improvements or just CW decode?    73, Guy

On Wed, Nov 14, 2012 at 10:59 AM, wayne burdick <n6kr at elecraft.com> wrote:

> 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 k3support at 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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