[Elecraft] NR for Dummys

[drewko]

I'm still playing with the 3.27 NR, but I like it alot. I operate CW
only and have been using the F1-x filter section mostly because it
seems that F2 through F4 are minor variations on the F1 theme, so to
speak; but I will try them later. With CW signals of course there is
not as much subtlety involved as SSB-- you mostly either hear them or
you don't. So for SSB maybe there is a bigger difference between F1-x
and F4-x. 

In general... I haven't found any signals yet that the NR loses when
it is turned on, so that is good. True, I also haven't heard any
unreadable signals that the NR makes readable, but I am probably
pretty good at ignoring the distraction of noise and QRM myself. 

The NR (especially F1-4) gives the impression of a very narrow filter,
but used with a wide bandwidth (2.5 KHz typical for me) you can hear
the widely separated signals-- it is an eerie and pleasant effect. I
am beginning to trust the NR so I can leave it on and tune across the
quieted band knowing it will not miss any signals. 

Anyhow, here are the settings I am using. You can try them for a
start. YMMV, as they say...

AGC Slow
AGC Threshold 8
AGC Slope 1
AFX Delay 2
RX Eq Flat 0db
CW Pitch 520 Hz (typical)
BW 2.5 KHz (typical)
Cheap Sony MDR-210 headphones (probably should get something better)

BTW, someone else mentioned being able to copy signal pitch down to 50
HZ in the previous beta; I can copy comfortably down to about 110 Hz
with the above setup.

I am used to using a receiver with AGC turned off, AF Gain at max, and
adjusting the volume with the RF Gain. But the NR+AGC is a lot more
convenient (don't have to keep riding the RF Gain control) and, so
far, just as effective as far as I can tell. 

Can't really compare the NR to the earlier versions because I didn't
use it all that much. 

73,
Drew
AF2Z


On Fri, 28 Aug 2009 00:29:09 -0500, you wrote:

>Where can I buy the book?
>
>Let's start with SSB on 3.27 (for me at this time).  Will somebody send me the "non-factory" settings you have changed and what you have them set to that give you the what you see as the best setting (at any particular instant).  I know this will change by conditions, antenna, location, etc. BUT, I would like somewhere to start AND have an idea which settings you change that help you in addition to the NR settings.
>
>Is this impossible?
>
>Huge thanks,
>
>73, de Jim KG0KP