All amateur radio repeaters serving East Anglia — FM, DMR and D-Star. Covering Suffolk and beyond, these repeaters are your gateway to local communication across the region. Data is maintained to the best of our knowledge; always verify with the relevant repeater group for the latest status.
Use of repeaters is for licensed amateurs only. Always give priority to mobile users and emergency traffic. Repeaters operated by SARG, the Martello Tower Group, and the Essex Repeater Group.
A repeater receives your transmitted signal and re-transmits it simultaneously from a high site — a mast, hilltop or tall building. This dramatically extends the range of a low-power handheld radio.
You transmit on the input frequency and listen on the output. Your radio handles this automatically when you programme a repeater channel — just set both frequencies and your CTCSS tone. The offset (difference between input and output) follows standard band plans.
Most FM repeaters require a CTCSS sub-tone to open the squelch and activate the repeater. If you transmit on the correct frequency but forget the tone, the repeater won't respond. All CTCSS values are shown on each card above.
DMR repeaters use colour codes instead of CTCSS tones. A colour code is a number (0–15) that acts as a filter — your radio must be set to the matching colour code to access the repeater. Both GB7AL and GB7MK details are shown above.
Always listen before transmitting. Give your callsign when you key up. Keep transmissions brief to allow others to join. Priority always goes to mobile stations and emergency traffic. Don't play music or make test transmissions unnecessarily.