The Coulsdon Amateur Transmitting Society (CATS) - callsigns G4FUR and M1FUR, meets on the 2nd Monday of the month at St. Swithun's Church Hall, Grovelands Road, Purley, Surrey, CR8 4LB. Meetings start at 20:15 hrs and finish at around 22:15 hrs. At a number of meetings throughout the year, guest speakers are invited to give talks on a range of Amateur Radio and associated subjects. At other times, members give presentations and demonstrations on their favourite subjects. External events are also scheduled eg DF Hunts and social events.