[TenTec] Orion - The Kachina Design Theory

[Warren J. Walsh]

At 16:56 3/6/02 -0500, you wrote:


>I wonder if Doug Smith wrote the following very good explanation
>of the Kachina DSP rcvr design theory?  Very well done,  and
>I am getting close to "knowing" something about DSP rcvr's,  but still
>quite a ways to go,  hi.  Have a look at:
>
>http://www.kachina-az.com/theory1.htm
>
>Guess I "know"  what a roofing filter does,  explained in the link,
>but why is it called a "roofing" filter?
>
>73,  Jim  KH7M

Hi Jim and list members,
The only thing I find interesting about the Kachina is that it doesn't use 
a DSP chip.  It uses a Motorola 16 bit micro-controller for the DSP 
work.  This does the job, but it is not the same as a dedicated DSP chip.

I have the ARRL book Digital Signal Processing Technology, that Doug Smith 
wrote, and highly recommend it to anyone interested in DSP.

I would also like to point you all to the following file on Digital 
Receivers, it's on my company's website at:

http://www.pentek.com/support/GetOTD.cfm/Dr_hbk2.pdf?Filename=Dr_hbk2.pdf

I's a small tutorial on how a digital receiver works versus an analog type.


73

Warren Walsh - K2BM

Pentek - Your source for DSP and Digital Receiver Boards.
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