[Elecraft] MCU 4.51

[drewko]

I can't really tell if there is an improvement due to the new log
algorithms but I really like the extended Threshold adjustment range.
I typically listen to CW on a wide filter setting and used to have my
AGC at Threshold 8 and Slope 0. Now I have Threshold at 15 and
thinking I should flatten the Slope at this point; currently set at 5,
but I'm still playing around with it. Possibly could go even flatter.

I don't use the NB enough to notice a difference. I was already quite
happy with the NB action on CW. It has always worked when I needed it.

Possible minor feature suggestion: I was thinking that it would be
convenient to have the Threshold numbers coorespond directly to the
meter S-units (i.e., a threshold adjustment range of 0 to 9). But I'm
uncertain if I'd want to give up the finer granularity of the current
0-20 range for the ability to directly set the AGC point according to
the s-meter. I guess I'd have to try it both ways.

Anyhow, I really like the improvements. I always thought it was a
major limitation to only be able to set the AGC point up to about S-4
or so.

73,
Drew
AF2Z



On Fri, 11 May 2012 20:55:44 -0700, Toby  W4CAK wrote:

>I don't know what others have been experiencing using the new 4.51 firmware version,  but I really think it is an improvement.
>
>I have been listening to pileups tonight on 20 meters and cannot discern any mushy weak cw signals,   signals are crisp and easily readable.
>
>Maybe I need bigger pileups to get a better handle on this aspect, or certain band conditions.   I run the threshold at 14 and the AGC SLP is set to 000.
>
>The Noise Blanker is improved.   I was able to get rid of s7 line noise,  and no distortion in the audio of the received signal.  NB settings are dsp T2-4,  and the IF is NAR 4.  So,  the noise is being eliminatd with low setting of the NB.  I suppose the real test will be when I hear  s9 plus line noise which I frequently get here. 
>
>AF Gain is set to LO in the config menu and have plenty of nice and crisp audio. I am listening to SSB on 80 meters now and have the RF gain set to about 9:00 and AF gain about 12 oclock.  Just lots of gain and audio.  
>
>I think 4.51 is ready to go BETA.   What do others who are using 4.51 think?
>
>
>Toby  W4CAK
>