The 757 needs TTL logic level inputs for it's CATt interface. I built an
interface using the Maxim MAX232 chip. A very simple arrangement. I
believe there was an article in QST a few years back or you can request the
design notes from Maxim for sample circuits. (A very good company BTW.)
W8KX
>
>I have a 757GX, and would like to know if it is possibile to build a CAT
>interface for the radio? I believe my radio has three pins coming out the
>back - are these simply RS-232 send, receive, and ground pins?
>
>73 and thanks - Matt
>--------------------
>Matt Werner, KB0KQA
>http://www.cp.duluth.mn.us/~kb0kqa
>kb0kqa@cp.duluth.mn.us
>
>
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>
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