Greenwich Time Signal not allow the pips to be broadcast except as a time signal. Radio plays and comedies which have fictional news programmes use various methods to avoid playing the full six pips, ranging from simply fading in the pips to a version played on "On the Hour" in which the sound was made into a small tune between the pips. "The News Quiz" also featured a special Christmas pantomime edition where the pips went missing, and the problem was avoided there by only playing individual pips and not the whole set. The 2012 project "Radio Reunited", however, did use the pips
BBC Radio 4 7pm its DAB output is usually in mono, even though many of its programmes are made in stereo (including its flagship drama "The Archers"), these can be heard in stereo only on FM, Digital TV on Freeview & Freesat (Ch. 704), Sky, Virgin and on line via BBC iPlayer radio. BBC World Service, which uses BBC Radio 4 FM & DAB frequencies between 01:00am and 05:20am, is in stereo, but only on Radio 4 FM & DAB and not on its own dedicated DAB channel. BBC Radio 4 Extra broadcasts in mono on DAB, but has always been in stereo