ERG - Repeater Logic

Background
The very first homemade 1970s effort for GB3ER did not last long. This was succeeded for GB3DA and GB3ER based on the early G3RKL/GB3US design. By the early 1990s its condition was poor and CTCSS amongst other facilities was required. The original units were replaced in 1995 with units developed by Malcolm G3XVV. During the 1996/7 site relocation, this was repackaged and enhanced. Eventually the XVV Logic was also retired and donated to the Braintree GB3BZ 70cms Repeater Project in 2001

Current Situation
Since the autumn of 1997 two units based on the popular and very flexible Mk2 G8CUL design were successfully used on both DA and ER for twenty years.

A third Mk2 CUL board was acquired in the autumn of 1998 and was pressed into service during 1999 to act as a spare and to assist development work.

To support the newer GB3DB 6m and GB3ZP 23cms systems, two newer enhanced Mk3 CUL units were acquired. So overall we have five CUL logic units - three Mk2s and two Mk 3s).

In December 2019 GB3DA switched to an integrated Yaesu DR-2XE repeater. The Mk2 CUL logic unit is not used for this, but was left in situ as a reserve. In July 2021 GB3ER also upgraded to a DR-2XE, retiring another Mk2 CUL.

Separately, our D-Star repeater GB7ZP uses an Icom ID-RP2C Logic controller with a 1U CentOS-Linux gateway, whilst MB7IDA Echolink uses a 1U Windows-based gateway.

Pictures
A picture of one of the G8CUL Logic Units is in the ERG Gallery.

Access
See individual repeater pages for details. Our FM Repeaters support CTCSS access with Tone-H, 110.9Hz.

8-Jul-2021