A mobile station is disclosed that includes a first antenna, at least one
second antenna, and a receiver coupled to the first antenna. The receiver
includes first control logic configured to generate a notification of the
receiver being able to receive a reception frequency band and includes a
transmitter coupled to the at least one second antenna and the receiver.
The transmitter communicates radio frequency (RF) signals in a
transmission frequency band over an RF transmit path to the at least one
second antenna. The transmitter includes a tunable filter coupleable to
the RF transmit path, and second control logic configured to adjust at
least one characteristic of the tunable filter based at least in part on
the notification. The adjustment is performed to reduce, when the tunable
filter is coupled to the RF transmit path, interference caused by
transmission in the transmission frequency band with reception in the
reception frequency band.