The TX-8 Active Transmitter Antenna Combiner by Radio Active Designs allows the connection of up to eight UV-1G wireless intercoms or other UHF transmitter to one antenna. Advanced active-linear design reduces intermodulation products to exceptionally low levels to minimize interference and provides compatibility with all forms of modulation (including FM, AM, SSB, and ENB), as well as a variety of digital forms (including FSK and MIMO). Individual channel indicators show RF activity and amplifier faults. An antenna fault indicator warns of excessive antenna VSWR. Output power is selectable to 50, 100 or 250 mW, independent of input power level.