--------
paul swed writes:

> I have used some pctel antennas and they have been very good over the
> years. (Very good = works). The model number at least gives you a hint if
> RS 422 or 232. But if you can't find any further detail you are stuck with
> one option.

If you can figure out how to power it, it is pretty trivial to see
if the data stream is single-ended (RS232) or differential (RS422)


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
p...@freebsd.org         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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