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Re: [KX3] KX3 Beta firmware rev 1.48: Adjustable noise blanker level

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AC6JA

Re: [KX3] KX3 Beta firmware rev 1.48: Adjustable noise blanker level

The ability of the "sticky" feature to keep the NB enabled when switching
bands is worth the price of admition alone!
Thanks for the upgrade!

Mike AC6JA

In a message dated 5/9/2013 10:39:27 P.M. Pacific Daylight Time,
[hidden email] writes:

KX3 beta firmware rev 1.48 (with DSP rev 1.20) is now available. See
detailed information below.

You'll need the KX3 Utility application to download and install firmware.
For full instructions on loading beta releases, refer to our KX3 software
page:

http://www.elecraft.com/KX3/KX3_software.htm

DETAILS:

The KX3's noise blanking level can now be set using the knob above the NB
switch (AF/RF-SQL). When NB is turned on (by HOLDing the NB switch), the
present setting (1-15) will be displayed on VFO B for about 3 seconds. To
select a new setting, rotate the knob before the display times out. The
display will then persist until you tap any switch. A subsequent hold of NB will
turn the NB off.

The NB setting is stored per-band, as is the NB's on/off state.

Important notes:

- The noise blanker is intended to reduce the amplitude of repetitive
pulse noise with a fast rise time. It will not suppress atmospheric noise. For
that, you may want to try NR (noise reduction).

- Noise blankers will cause a certain amount of intermod or shaping of
signals when set too aggressively. We minimized this with our new DSP
algorithms, but you'll still want to use the lowest effective setting. "NB 1" will
do the least blanking and create essentially no artifacts. Settings up
through "NB 8" or so will still minimize artifacts. If the noise is really
strong, you can go all the way up to 15. These higher settings are great for
digging out weak signals, but can modify the sound of strong signals somewhat
and cause some pumping on a busy band.

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