Phil,

It just shows how effective DSP in the IF circuits can be.  I'll bet it 
doesn't work nearly as well in the audio chain.

Steve

----- Original Message ----- 
From: "Phil Scovell" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, May 01, 2009 13:05
Subject: Another DSP Experience


> So the other night on 40 meters, the thunder storms over the planes were =
> killing the band.  I often listen to a couple of high speed guys for =
> practice because when they are in contact, they normally run 45 to 60 =
> words per minute.  They often hang out on 7032 if you are interested =
> using W4NPX and W6WXZ for call signs.  This particular evening, both the =
> Florida station and the Californian were running strong 10 over S9 =
> signals but so was the peaks from the static crashes.  At high speed CW, =
> fade, QSB, or sudden static, QRN, can take out two or three words so the =
> louder, the better.  I was copying them both fine but the static crashes =
> were wiping out several letters and words at a time.  Just for fun, I =
> snapped on the DSP.  The static crashes were all but gone and I no =
> longer was missing anything as before.  Years ago, when running a 2 =
> element 40 meter beam at 70 feet, summers, beaming east, were killers.  =
> I soon learned, if I didn't want to listen to all those static crashes, =
> I could beam to the west, reducing the static crashing by about 20 DB, =
> and work western stations just fine.  The DSP works, for CW signals at =
> any rate, way better that I thought it would.
>
> Phil.
> [log in to unmask]
>