> > What is the DOC (now Industry Canada) and FCC limit without a license > > in the 900MHz band? > > Because spread spectrum is frequency hopping, and it doesn't 'JAM' anything > due to it's transmission methodology, there is no license requirement. I > think > FCC part 47 mentions this. CRF 47 part 15.247 - I Watt, also Direct Sequence modulation. Antenna gain limited to 6dB FCC. No license, but type acceptance for the tx. Under ideal circumstances 20 miles is achievable reliably. Tom >