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L1-07D.06 – Two-way Radio Communicators

L1-07D.06 – Two-way Radio Communicators Digital Alarm Radio Transmitters (DART) communicate and receive an acknowledgement from the Digital Alarm Radio Receiver (DARR). If the signal is not received, the transmitter re-transmits the signal again. Two-way radio...

L1-07D.05 – Repeaters

L1-07D.05 – Repeaters Repeaters may be used to receive a radio signal and forward to the central station, or to another repeater. In the above example, the one-way radio communicator in Joe Customer’s residence could not communicate directly to the central station...

L1-07D.03 – One-way Radio Communicators

L1-07D.03 – One-way Radio Communicators Digital Alarm Radio Transmitters (DART) communicate without receiving any acknowledgement from the Digital Alarm Radio Receiver (DARR). Multiple transmissions are communicated in attempt to ensure that at least one transmission...

L1-07D.02 – Radio Frequency

L1-07D.02 – Radio Frequency The Federal Communication Commission (FCC) has set aside radio frequencies for use in alarm communications Frequency allocation may be viewed at: The Federal Communication Commission (FCC) limits the power of the radio communicators to two...