Unlike the analog repeater GB3BS, GB7BS does not have or use any Repeater Controller, in the traditional sense.
Apart from a few security and validation checks, the repeater repeats exactly what it receives. There are no “pips”, Speech or anything that is “controlling” the repeater. All this has now been passed out to the Terminal, which is you the user and your radio!
It now depends entirely on how you program and set up your radio as to if it “beeps” when someone stops transmitting for example.
However, there are still some things that do not change. One of these is that as part of the license conditions (NoV) we must send a Repeater Identification.
This is done as a traditional CW Beacon every 20min. To do this the repeater will automatically switch its transmitter to analogue mode (FM) and broadcast a CW ID. Once completed the transmitter switches back to digital (DMR) mode.
This beacon is only transmitted when there is no digital traffic or if both Time Slots are not in use. It should be noted that if a analogue beacon is being broadcast then no digital (DMR) traffic will be allowed.
Besides the analogue CW ID, there is also a Digital beacon or ID that gets transmitted every 5 min when the repeater is not in use. However, if the repeater is busy then this digital ID is broadcast as part of the bit stream.
This digital beacon or ID is used for radio’s that use the Roam function to determine which repeater is the best (if its in range of more than one) and automatically change channel to make use of it. This Roam function is primarily for when using the South West Cluster Network. Not all radio’s support Roaming.
With this goes more dependency on the user correctly programming the radio.
Failure to correctly program your radio can, in some circumstances, cause
interference or blocking to other stations.
Before programming any radio you should ensure that you firstly have a valid
DMR Marc ID registered against your callsign. DO NOT just make one up as this
will cause problems and also prevents duplication. Each radio MUST have its own
and unique identification number
Also, make sure that you have the correct frequencies for the repeater, colour code
and Tx Admit Criteria settings selected correctly.
Make sure that you have the channel set up to transmit and receive on the correct Time Slot and Talk Group. Please keep to the recognised Talk Groups. For GB7BS that is Talk Group 9 on Time Slot 1 and Talk Group 950 for Time Slot 2 which will give you access to the South West Cluster Network.
If you are unsure of the correct settings for your radio then we will be please to clarify or answer any questions you may have. Please use our Contact Us page to get in touch.
Finally, there is still a Timeout function. This is currently set to 5 min. As soon as this timer is reached the repeater will simply drop the current Time Slot or Talk Group without any warning.