Phil,

Is the DSP in the 7000 in the IF or audio circuits?

Steve

----- Original Message ----- 
From: "Phil Scovell" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, February 08, 2009 17:42
Subject: DSP


>I remember awhile back someone asking what DSP was.  It stands for Digital
> Signal Processing.  Originally, the way it used to work was by taking a CW
> signal, buried in noise, and record it on the fly on to a computer hard
> disk.  Then that audio was filtered of noise before sending it out to the
> speaker or headphones.  Now it is all being fed through gigabyte chips.
> Anyhow, it attempt to remove the noise and process the CW signal, dumping 
> it
> out minus the noise theoretically.  The DSP on my Icom R75 receiver I 
> didn't
> consider to be worth while to use.  However, I use it often with the Icom
> 7000 transceiver.  The other night, I tuned around and found a signal that 
> I
> could hear, but not copy, below my line noise.  Turning the DSP on, he 
> came
> up out of the noise and although weak, I could copy him perfectly.  Yes, I
> use it on SSB signals, too, but it works best with CW signals.
>
> Phil.
> K0NX
>