[Elecraft] New K3 f/w: MCU 1.48, DSP 1.45 and new Downloader version available

2007-12-12 Thread Dave G4AON
Except for those CW ops who leave their K3 on a spot frequency and use 
the NR to reduce the background hiss level a bit... Again a feature has 
been removed on an upgrade (NR no longer works for bandwidths below 
500 Hz). I've gone back to MCU ver 1.45 and DSP 1.43.


Dave, G4AON
K3/100 #80
===

NR continues to evolve.

SNIP

Lyle kK7P
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Re: [Elecraft] New K3 f/w: MCU 1.48, DSP 1.45 and new Downloader version available

2007-12-12 Thread Vic K2VCO

Dave G4AON wrote:
Except for those CW ops who leave their K3 on a spot frequency and use 
the NR to reduce the background hiss level a bit... Again a feature has 
been removed on an upgrade (NR no longer works for bandwidths below 
500 Hz). I've gone back to MCU ver 1.45 and DSP 1.43.


This is not in general a good idea, because each release contains bug 
fixes as well as new features. The 500 Hz restriction is temporary.

--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
K3 no. 7
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[Elecraft] New K3 f/w: MCU 1.48, DSP 1.45 and new Downloader version available

2007-12-11 Thread Eric Swartz - WA6HHQ, Elecraft

We've just released new K3 firmware:
MCU V1.48 and DSP V1.45

* Power output via -external- CW keying no longer jumps up slightly 
above requested level.

* Noise reduction much improved, including insertion loss compensation.
* S-meter accuracy improved.
* LINE IN state preserved on power-off.


We have also released a new K3 software download utility, V 12.09, that 
has improved error recovery and several other new features.



See http://www.elecraft.com/K3/k3_software.htm for more info.

73, Eric   WA6HHQ

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Re: [Elecraft] New K3 f/w: MCU 1.48, DSP 1.45 and new Downloader version available

2007-12-11 Thread Lyle Johnson

* Noise reduction much improved, including insertion loss compensation.


Can you offer a little more information about the NR?  In this version 
of NR, the set levels are in four groups of four, whereas previous 
versions have been 0 to 39 or 0 to 3.  Additionally, I noticed that the 
NR does not appear to work below BW of 500Hz.  Is that true or am I just 
not noticing the effect?


NR continues to evolve.

The latest version, as you noted, has four settings for each of four 
groups.  The lowest numbered setting in each group is the gentlest, 
while the highest setting in each group offers more noise reduction but 
slower response.  If find for SSB use that I usually use the 2nd setting 
[ NR F1-2 or NR F2-2 ].  The F4 group can have a sort of hollow sound 
for voice under some conditions, but is excellent for narrow modes like CW.


Below a width of about 500 Hz, NR is disabled in the current release. 
We have more code we are testing now that allows its use down to the 
nominal 50 Hz wide filters in CW mode.  If testing goes well, it will be 
released in due time.


Even more exciting, we are also testing... oops, I'd better not say!

73,

Lyle kK7P

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Re: [Elecraft] New K3 f/w: MCU 1.48, DSP 1.45 and new Downloader version available

2007-12-11 Thread Ed K1EP

At 12/11/2007 07:44 PM, Eric Swartz - WA6HHQ, Elecraft wrote:

We've just released new K3 firmware:
MCU V1.48 and DSP V1.45

* Power output via -external- CW keying no longer jumps up slightly 
above requested level.

* Noise reduction much improved, including insertion loss compensation.


Can you offer a little more information about the NR?  In this 
version of NR, the set levels are in four groups of four, whereas 
previous versions have been 0 to 39 or 0 to 3.  Additionally, I 
noticed that the NR does not appear to work below BW of 500Hz.  Is 
that true or am I just not noticing the effect?



* S-meter accuracy improved.
* LINE IN state preserved on power-off.


We have also released a new K3 software download utility, V 12.09, 
that has improved error recovery and several other new features.


Hm, I forgot to download that, but it appeared that the previous 
loader worked fine.  When you have the loader check for new firmware, 
I guess it doesn't check for new versions of itself.


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