Single Frequency Repeater
Repeater output: 431.1750MHz
Repeater Input: 431.1750MHz
DMO-R mode or Psreudo trunk
Colour code: 5
Repeater 25 watts ERP
First Switch On. No networking at this stage, standalone operation.
Licensed today, time to get a move on, I was not expecting MOD/Ofcom to be this quick with the paperwork!
An application has been submitted to the ETCC for a Single Frequency Repeater (SFR) for the Stoke-on-Trent area, co-located with GB7SI.
Radio users wishing to use this repeater will need to configure the DMR terminal to monitor both time-slots whilst in DMO mode, on some terminals this is called pseudo trunk.
Not all brands of radios may work (MD380 type radios to be tested), if you are using a professional radio; Motorola, Hytera, Simoco Tait, upgrade to the latest firmware. You may require an additional license from your radio manufacturer to active this optional feature in the terminal.
See below for further information;
Same frequency TX and RX?
In the world of DMR it is possible to operate a DMR radio terminal via a single frequency repeater known as a SFR.
How can this be possible?
You have two time-slots in a single 12.5KHz space, means it is possible to operate a DMR radio terminal as a single frequency repeater.
Voice or data information is received in DMO mode on the first time-slot by the SFR and is re-transmitted on the second time-slot (90ms) almost simultaneously.
SFR enables the range of a direct link between conventional DMR devices in DMO mode to be extended without having to use a standard base station or repeater or change frequency. This gives the radio user greater coverage using just a single simplex 12.5KHz channel.
Radios wishing to communicate via a SFR will have to be pre-configured as follows