I need a one way RF link. I'm considering use of 915MHz, but I can not
find any transmitters with FCC modular transmitter certifications
(http://louise.hallikainen.org/FCC/FccRules/2010/15/212/ ).

Section 3.1 of http://ww1.microchip.com/downloads/en/DeviceDoc/70329b.pdf
states that the MRF24J40MA has certification as a modular transmitter.

I COULD go Zigbee all the way, except that the "receivers" would generally
need to transmit back to the "transmitter" where the data originates.
Section 3.1.1 of the datasheet requires the antenna be 20cm or more away
from people. This disallows a handheld or portable "receiver."

So, what about the possibility of operating one MRF24J40MA as a
transmitter and multiple MRF24J40MA modules as receivers where the
receivers NEVER transmit? Has anyone tried anything like this? Is it a
good or bad idea?

THANKS!


Harold


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