ProComm Im-AF Splitter CB AM FM Radio Audio Stereo Antenna MultiPlexor ALLOWS YOUR CB ANTENNA TO SIMULTANEOUSLY WORK AS AN AM/FM ANTENNA NO TUNING NECESSARY 30 WATT MAXIMUM INPUT POWER RATING WORKS WITH STANDARD CB ANTENNAS  NOT RECOMMENDED FOR USE WITH NO-GROUND ANTENNAS INCLUDES: (1) Multiplexor Box, (1) 2 Male BNC to Male Motorola plug, (1) 2 Male BNC to PL259