Are the OFDM Backhaul radios an 802.11a device?

Are the OFDM Backhaul radios an 802.11a device?

No. The 30/60 and 300 Mbps Backhaul use different encoding and radio transmission systems than 802.11a. In areas where 802.11a systems are operating, the backhaul will detect the 802.11a radio signals and choose a clear channel away from any interference.