[HomeBrew] DSP kit or project

[David J Windisch]

Hi, John:
It's not DSP, but you can get into the '440's audio notch-chip circuitry and 
and bugger it so that the chip will provide notch/peak with the (former) 
off/on switch.  I *do not* have the details anymore, it's been years since I 
did this, but the circuitry is "standard" state-variable with hi-pass, 
lo-pass, bandpass, and notch out to various pins of that custom 
discrete-component chip.
If you get DSP, this is a good place to insert it in the '440 circuitry.
HTH.
73, Dave, N3HE

----- Original Message ----- 
From: "vk6jb" <vk6jb at amnet.net.au>
To: <homebrew at mailman.qth.net>
Sent: Thursday, December 15, 2005 2:44 AM
Subject: [HomeBrew] DSP kit or project


> ** Please do NOT cross-post messages when posting to HOMEBREW **
>
> Hi All,
> I am interested to know if there is a kit or project around that i can 
> build
> my self.
> I would like a DSP for my TS 440SAT.
SNIP