BT has for many years graciously provided free facilities for the beacons, APRS node and pager/repeater as one of its community return projects.

On the 10th floor of the Martlesham Radio tower, are the microwave beacons, APRS node and 70cms Pager/repeater.

G4MRS operates beacons on 23, 13, 10 and 3cms for UK and Europe

UHF/Microwave Beacons (GB3MHL – GB3MHX – GB3MHS – GB3MHC)

The GB3MHL has two units at the top (with fans). The black box is the GB3MHL driver. Then there is the driver for the GB3MHX 3cm beacon. The GB3MHX multiplier and both beacon antennas are out on the galleries (on the outside of the radio tower). The followingt units are operational at the time of writing:

• GB3MHL – Operating on 1296.830 Mhz is the top unit
• GB3MHX – Operating on 10368.830 Mhz is near the top
• GB3MHC – Operating on 5760.830 Mhz is in the middle
• GB3MHS – Operating on 3400.830 Mhz is the bottom beacon unit

There is a PSU is at the bottom of the rack.