UD 23 is a passive antenna combination for the reception of analogue FM signals and the digital radio broadcast DAB/DAB+. It is the ideal replacement for older FM aerials as it allows legacy FM receivers in MDUs to receive excellent signal while adding the frequency band to facilitate operation of digital audio broadcast receivers.
The gain of the antenna is 3 dB at band III (DAB/DAB+) and 0 dB at FM. Two separate F-connectors allows the divided insertion of FM and DAB/DAB+ into the existing in-house distribution network.