4Tune FM on 87.8 is currently being completely wiped out here in Bermondsey SE1 by Ramadan Radio only 100 KHz away on 87.9. This Ofcom licenced RSL station started broadcasting last Saturday.
Last year Ramadan Radio broadcast from a site in Tooting and its signal was sitting uneasily alongside 4Tune FM here, with knocking, but this year they appear to be transmitting from a site in Whitechapel, according to Ofcom:
http://static.ofcom.org.uk/static/radio ... d-list.htm
This new signal is coming in loud and clear here in SE1 and is completely wiping out 4Tune FM.
The station will be on air until 1st May, so 4Tune FM's audibility on FM will be severely affected in East and South East London for another 27 days.
Links:
https://4tunefm.co.uk/
http://ramadanradio.org/