The following information comprises details of the technical parameters of all analogue VHF, MF, and DAB transmitters (including services on multiplexes) currently on-air. In-use parameters are included mainly for listeners and aerial installers who may wish to know more about the nature of the signals they are receiving and possibly optimise their aerial accordingly. The maximum allowed parameters (within the terms of each licence) for analogue services are also included for the benefit of those, principally in the industry, who wish to make calculations, particularly about interference, for coverage-planning purposes. The format is intended more for ease of download and transfer into specialist databases, than for presentation. Additionally, CSV data is provided for viewers who don’t use MS Excel or a compatible application. The TxParams data will be refreshed regularly as new transmitters are added, modified, or suppressed. This update contains some additional records for recently commissioned transmitting stations.