|'Retail Pack. Rugged and reliable external or indoor unit that allows FM DAB and UHF signals to travel down a single coaxial lead. Ideal for Digital or Analogue signals. DC through pass allows a UHF mast-head amplifier to be used. Very very low insertion loss 0.6dB UHF 0.5dB FM 1.0dB DAB. CAN ALSO BE USED OUTSIDE THE UK FOR COMBINING TV SIGNALS IN BAND I III & UHF.'