Abstract: Adaptive apparatus for eliminating interference from a received signal provided on a transmission line caused by radio transceivers includes a plurality of frequency tunable filters tuned to the operating frequency of a corresponding transmitter. The transmitter signal of each transmitter is provided to a corresponding filter. The filter eliminates the non-essential transmission of harmonics, intermodulation and wideband noise of the transmission signal. The adaptive apparatus includes a plurality of cancellation devices wherein each cancellation device receives a sample of each filtered transmission signal and the received signal. The received signal includes an error portion generated by the transmitters and a non-error portion corresponding to the signal received by the antenna. Each cancellation device compares the corresponding sampled transmission signal with the sample of the received signal.