Total posts : 45366
I believe Mark is referring to the BETS rules for broadcasting, where the AM restriction is field strength only (250uv/m at 30 meters). Such a field strength is barely above noise levels and pretty useless.
RSS210 is basically the same as Part 15, and antennas + ground wire + feedline are restricted to 3 meters. But you’re not supposed to use RSS210 for broadcasting (however, nowhere is broadcasting defined).
The manufacturers and most micro broadcasters ignore the distinction and use transmitters that are RSS210 certified anyway, such as the ProCaster. I have yet to hear of anyone cited for broadcasting on the AM band with an RSS210 certified transmitter. Even on the FM band, Industry Canada tends to only go after the more powerful pirate stations and ignore the little guys.