GB3DA 2m FM Voice Repeater

GB3DA is the primary 2 metre FM voice repeater for Essex. Based at Danbury Hill near Chelmsford, its central location makes it ideal for general coverage of the county. Units DA-1 and DA-2 use Mk2 CUL logic, whilst DA-4 is based on a Yaesu Fusion repeater. The antenna system is fed via a 6-cavity diplexer from Procom/Telewave, plus a DCI filter on the receiver side.

Status: RF On - DA-4 in service

Frequency 145.125 MHz Input, 145.725MHz Output, Channel R5 (RV58)
Transceiver Yaesu DR-2XE Fusion repeater
Access Continuous CTCSS-Only, Tone-H 110.9Hz - or Fusion C4FM
Power 25W erp
Antenna Procom 3dB Colinear
NGR TL 779 050
Locator JO01GR
Antenna Height 110m above mean sea level (Base of mast is 100m msl)
Coverage Maps General Area , Southend

The ERG Gallery has pictures of the DA Radio(s) and Aerial etc


  • DA-4 installed on 8-Dec-2019 uses a Yaesu DR2-XE System Fusion box inc its internal controller. Normally set for C4FM or FM input, and FM out.
  • Compared to our older units, Idents etc sound different and there is no 'K' ack - please wait for the short Tx squelch tail instead
  • The original and spare Tait systems are known as DA-1 and DA-2 respectively.
  • An Upgrade to DA-3 using ADI radios (similar to ER-3) was suspended
  • GB3DA has no networking/linking. It does not support DTMF/Echolink - please use MB7IDA