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Old July 25th 08, 06:03 PM posted to rec.radio.amateur.equipment
SP1WSC SP1WSC is offline
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First recorded activity by RadioBanter: Jul 2008
Posts: 4
Default CAT protocol specifications?

Registered User wrote:

I am looking for the specifications of the CAT protocol mainly for Yaesu
and Kenwood TRXs. I have the basic commands in the user's manual but I
am looking for full specs, including memories management, etc. Any
pointers or hints would be highly appreciated. TNX in advance.


The FT-897D uses 5 byte command blocks.The first 4 bytes hold the
command arguments while the carries the opcode. The manual provides
the opcodes and further details.


Yes - the manual provides the basics and explains how to construct the
packets etc. What is missing though are the methods of handling the
memory banks. It even doesn't say how to read/write memory locations (I
may suspect that user memories are to be accessed by reading/writing
specific hardware memory addresses). And I have read somewhere that
there is a full specifications document, which covers these topics plus
there is even more - some undocumented features, which can be accessed
this way. I am looking for at least the specs that would allow one to
deal with user memories. FT-897 is a good choice - I have to deal with
FT-857, which is supposed to be fully compatible, but also with VX-7R,
which almost certainly is not.