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Re: CompactFLASH 900 MHz radios (was: VGA PDA alternative, USB, WiFi,

From: "Brian Empey, P.Eng." <>
Date: Wed, 14 Apr 2004 15:00:05 -0700

Tony Havelka wrote:
> 
> > #2
> > Would anyone be interested in a 900 MHz low-power radio in a
> > Compact FLASH configuration with idle power around 1mA And TX
> > power <10% of the best WiFi units (~17mA), and a range up to
> > at least 1 km with a decent antennae? Anticipated price <<$100-
> 
> For wearable apps distance is not really an issue - throughput is.
> One thing that we have been wrestling with is the problems associated with moving away from a "standard" protocol.  The benefit with sticking with Bluetooth, ZigBee or Wi-Fi is that you are not really locked into a vendor.

Agreed, Tony.
We would support ZigBee protocol for sure.
We might also support LIN.  Since we are creating wired LIN networks, we'd
like a low-cost wireless bridge for industrial units (sensors, etc.) and
we're thinking of just continuing the RS-485 signaling into the RF medium.

But for CF modules, we'd be running ZigBee.
There could be multiple products:
- very low power, low speed (possibly 315/433 MHz)
- higher power, higher speed (900 MHz)

We'd be going "non-standard" if we support 1 MegaBaud data rates, since
ZigBee is limited to 250kbps I believe.  But you could also use the same
unit at lower rates too for compatability.

Brian

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