I'm usually lurking and reading interesting threads.  This group has always
impressed me with its depth and breadth of ingenuity so I've decided to see
what you might turn up.

I've been trying to find a low power radio for an industrial data
acquisition system with worldwide distribution.  We have about 192kbaud data
rate, are battery powered, will be in motion much of the time, and will have
multipath and EMI/RFI noise problems.  Because of the motion, power is
unavailable so we use rechargeable Lithium batteries.  I've used an Aerocomm
radio in the past, but started looking at trying to burst data, then shut
down - something the Aerocomm doesn't have time to do.  I've looked at
Bluetooth, 802.11 (a, b, g), Nanotron and ZigBee.  Ideally, stacks would be
embedded inside the parts with a simple serial interface (to reduce memory
size and power requirements).

ZigBee would be on most of the time, so power savings are dubious and I
can't find parts - may be too early.  I found a Bluetooth part from
National, LMX9820, but I'm having trouble getting a full data sheet. Any
other parts that have the stack embedded?  802.11(a) looks like a good
worldwide choice with reasonably low power (though not easy to quantify)
chipsets available - here again I don't have much room for a stack. Any
ideas on a quick easy implementation?  Nanotron looks good on paper, but
there's no standard yet or certifications that I'm aware of.

Anyone have some suggestions?

Thanks,
Ed

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