Re: Z-Wave RF range

["Robert L Bass" <robertbass1@xxxxxxxxxxx>]

> It may be even worse than I thought...

Rather, it's much better than what you claimed.  The following is from the Z-Wave FAQ:

Q. Zigbee representatives claim a better range for ZigBee 2.4GHz than Z-Wave

A. This claim is untrue. The Z-Wave sub-1 GHz FSK radio has a superior communication range compared to 2.4 GHz DSSS radios. There
are two main reasons for this. Firstly, the sensitivity of the Z-Wave radios is approximately 6 db better than a 15.4 DSSS radio.
Secondly, the physical propagation range of a 868/915 MHz signal is approximately 2.5 times the equivalent 2.4GHz signal..

BTW, Mr Houston has claimed (weithout ever having actuially tested it) that Z-Wave suffers from severely limited range due to the
max number of hops.  What he fails to mention is that Z-Wave will seek the best routing and that with a macximum of 232 nodes, the
system has a much better chance of "getting through" than simpler systems.  Also, with a conservative distance of 30' between nodes
and the controller located in a central position Z-Wave could handle a home that is 180' x 180'.

--

Regards,
Robert L Bass

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