Conventional Systems

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A conventional system is a radio system that does not use trunking to automatically and dynamically assign channels to radio users. Instead, the radio users themselves must chose which channel to speak on. Generally, on such systems work team assemble on a specific channel and stay there. Sometimes there may be a call channel, where a dispatcher allocates work to users or teams and in such cases, users will monitor this channel yet may communicate with their team on another channel.

In MOTOTRBO

In order for two or more radios to communicate with each other, the users need to be on the same channel. In order for communications to work, the channel will need to include the following configuration:

  • Matching transmit and receive frequencies.
  • The same colour code.
  • The same Group ID.
  • The same or matching encryption key.
  • Unique Radio ID.

If operating on a repeater, the transmit and receive frequencies will be the receive and transmit frequencies of the repeater. If operating on an IP Site Connect System, the radios would need to have multiple channels in the channel pool and roam list - see IP Site Connect.

Simplex Operation. All radios transmit and receive on the same frequency. The colour code and Group ID would have to be the same. If privacy is used, all radios would have to have matching keys.
Repeater Operation. All radios transmit on and receive on the same frequency pair. The repeater transmits and receives on the inverted frequency pair. The colour code and Group ID would have to be the same in all radios. The colour code has to match that of the repeater. If privacy is used, all radios would have to have matching keys.