[Tinyos-help] FCC regulation 15.231 for 433 MHz mote

[Ken Bannister]

I am deciding on the motes to use for a soil sensor data collection 
network in the US. I like the range of 433 MHz MICA2 motes, but I am 
concerned about FCC regulation 15.231. My concern is that it limits the 
output power to the point that this frequency loses its value. Has 
anyone looked in-depth at this issue?

My understanding is that a data collection network such as mine cannot 
use the paragraph (a) power limits. Paragraph (a) systems seem to be 
limited to control-based systems, like a garage-door opener or a keyless 
entry system for a car.

In this case the data collection network must use paragraph (e) power 
limits. This means the EIRP of the transmitter must be no greater than 
-22 dBm peak, or no greater than, say, -5 to -10 dBm peak for a 
transmitter with a small duty cycle.

Thanks for any insight,
Ken Bannister