ERDM is a repeater operation regime at one frequency. This regime allows increasing coverage zone of direct connection by using one simplex frequency
Description
Key advantages
Increased coverage zones
Receiving of additional frequency is not required
Operation principle
Receiving and transmission of the signal in ERDM regime are performed at one frequency by the repeater that transfers the signal on one time-slot and receives it at the other.
The radio initiates a signal transfer in direct mode and it can receive signals directly either from the repeater or from radion. At the moment of receiving the radio indicates the best signal. Direct communication mode continues operating and in the case of lack of repeater, the coverage doesn’t require an additional channel switch.
ERDM supports only one-site conventional operation mode. ERDM does not support the data at the “revert” channel, phone mode of the repeater, IPSC, Voting, digital-analog combined regime.
Functions
Individual, group, general and emergency calls
Basic or improved safety
Data receiving and transfer
Call interruption
Repeater configuration via IP
RDAC
Distant switching on/off of the radio
Distant listening of the radio
Operation in dispatch complexes TRBOnet Enterprise and TRBOnet Watch
Radio code transfer for checking its belonging to "friend-foe" system
Lisences
To work in ERDM mode a license for the repeater is required.
Compatible portable radios
Compatible mobile radios
Compatible products
Compatible software
