The current version of GB3LD (MkIII) uses a Nokia BSR-150L/N PMR repeater that was originally used in a public utilities communication system.
The earlier repeaters that use 2 Pye MX294's, (1 used as a transmitter, 1 as a receiver) have been retained as emergency spares with each one being self contained in their own case.
Output is approx. 12dBW/16W ERP via a Wacom WP641 duplexer and a J-Beam dipole type 7051. The receiver has a DCI-145-2H , 2 Mhz wide bandpass filter in the antenna feed to keep out local pager transmitters.
A three section AFL notch filter has been added to minimize interaction from a PMR VHF high band base station located at the same site.
Repeater control logic is by a custom built PIC circuit with GB3LD specific firmware written by GD4HOZ