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[Yaesu] Decoding CAT Bytes

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Subject: [Yaesu] Decoding CAT Bytes
From: Laurent LABOURIE" <llabourie@nordnet.fr (Laurent LABOURIE)
Date: Fri, 29 May 1998 18:59:02 +0200
Hello Jim

You may download the latest version of Soft990 for MS-DOS at my web site :


A (little) part of the code (Quick Basic 4.5) is included in Soft990.zip (to
frequency and modes). Note that Yaesu programming is full different for each
TRX and very different of Kenwood or Icom programming.

73, Laurent F6DEX

>Well I knew this project was going to be fun (read
>challenging/frustrating). This is the conversion of the Basic Stamp 2
>Remote Base Controller (May, QST) from an ICOM to the Yaesu family of
>transceivers. I have the units now conversing happily with one another.
>I can set frequencies and select channels. My challenge has been in
>decoding the bytes returned from the transceiver to read frequencies &
>status of the VFO.  I have the limited documentation that accompanies
>the FT-840 but alot is left out or assumed.
>Before I get into specifics, does anyone have experience doing byte/bit
>level decoding of the Yaesu CAT streams?  Does anyone know of
>applications with source code available (any computer language) which
>read and parse the Yaesu frequency information?  I am primarily
>interested in decoding and translating the 19-byte status update
>Final code for this project will be shared with all.
>Thanks for ideas.
>Jim W7NJ
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FAQ on WWW:               http://www.qsl.net/k7on/yaesu.html
Submissions:              yaesu@contesting.com
Administrative requests:  yaesu-REQUEST@contesting.com
Problems:                 owner-yaesu@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm

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