Broadcast Auxiliary Service Filter

RFS has introduced a new Broadcast Auxiliary Service (BAS) Interference Mitigation Filter (IMF) that rejects all AWS-1 and AWS-3 spectrum emissions to improve transmission quality for BAS channels 1 through 10. The AWS spectrum is adjacent to the 2 GHz BAS band broadcasters use to backhaul signals from mobile news teams in the field and to transmit signals between the studio and the transmitter.

When the new BAS filter is installed in the broadcaster’s BAS link, it eliminates the interference issues that can occur when mobile network operators transmit on AWS spectrum. Unlike many existing filters, which can only be installed indoors, the new BAS filter from RFS is enclosed in a weatherproof aluminum housing so it can be installed on the tower, closer to antennas, or rack-mounted. In addition, operator field tests confirm that the RFS BAS filter lowers out-of-band emissions (OOBE), potentially reducing the number of band block filters that operators need to purchase and install to comply with Federal Communications Commission (FCC) OOBE limits. Additionally, the filter provides downlink insertion loss of just 0.3 dB, is easy to install and meets IP67 requirements for ingress protection.