Details of the GB7KR repeater

Details of the GB7KR repeater

GB7KR is a digital 70cm voice repeater located near Kidderminster in the West Midlands, it is not yet in service.

It is licensed for digital mode and will be connected to the Brandmeister DMR Network and linked to the Salop Cluster (see

The channel is DVU-R23, NOTE this is a reversed TX & RX channel to the normal DVU channels.  Output frequency is 430.2875 MHz, with the input 9 MHz above, on 439.2875 MHz., Colour Code 8.

Coverage is expected to be similar to that of GB3KA.


Callsign: GB7KR
Location: Near Kidderminster, West Midlands
TX frequency: 430.2875 MHz
RX frequency: 439.2875 MHz
Split TX/RX: 9.0 MHz
Channel spec: Narrow (12.5kHz channel spacing)
Modulation: DMR
Colour Code: 8
Antenna: White stick collinear
TX Power: 24W ERP omnidirectional
Intended Coverage: Kidderminster town and immediate surroundings as far as Iverley Bank, Chaddesley Corbett, Hartlebury etc.
TX/RX: Pair of Maxon PM100U mobiles.
Duplexer: Procom, or similar 6 cavity
Computer: Raspberry PI + MMDVM
Talk Time: 3 minutes maximum per “over”.
Keeper: Richard G0EWH