In UK and Irish practice, “low power television service” describes the provision of television over a deliberately small coverage area using low‑power terrestrial transmitters, either originating local programmes or re‑
broadcasting (as a relay/translator) an existing service. The expression is descriptive rather than a defined statutory term: regulation is by specific licence categories set by Ofcom (England & Wales, Scotland, Northern Ireland) and Coimisiún na Meán/ComReg (Ireland).
Such services operate on a secondary, non‑interference basis to full‑power television multiplexes and other primary services: they must not cause harmful interference and typically enjoy little or no protection from it. Common applications include local TV, self‑help relays, temporary or special‑event coverage, and small
subscription or community offerings.
There are no universal wattage limits in the UK or Ireland. Permitted effective radiated power, frequency, antenna pattern and height are prescribed case‑by‑case in the wireless telegraphy/spectrum assignment. The fixed UHF/VHF power figures seen in some jurisdictions do not apply here.
In practice, operators require both content/broadcast authorisation and a spectrum licence, plus planning and site consents, with technical coordination to protect DTT (Freeview/Saorview) and other licensed services. Usage is broadly consistent across the UK and Ireland.