> I'm not sure if the modem uses the handshaking to determine R/Tx
> changeover. The PC software will just be the datalogger client
> software.  I'm using a World Wireless Communications 900 SS Direct
> system.  It is rated at 35+ miles, 4800/9600 bps.

My feeling is that you could most likely get it working just by doing
a hardware null modem kind of loop back at each modem.

And thanks for the info on the modem. 35+ miles would be way
overkill for my little job and no doubt the price would be too.

Brent Brown
Electronic Design Solutions
16 English Street
Hamilton, New Zealand
Ph/fax: +64 7 849 0069
Mobile/text: 025 334 069
eMail:  brent.brown@clear.net.nz

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