Telewave TPRD-1584 allows simultaneous operation of a transmitter and receiver into a common antenna. This Pass-Reject duplexer is an ideal choice for systems requiring maximum isolation, with close frequency spacing down to 500 KHz. The TPRD-1584 bandpass duplexer consists of four 8" cavities with maximum input power of 350 watts and provides up to 0.5 MHz frequency separation. Maximum insertion loss for TRPD1584 is 1.5dB and it creates minimum 80 dB of isolation. Selectivity and insertion loss may be adjusted by rotating the calibrated connector loops.