Third Generation ALE
Automatic Link Establishment - Technology that allows for quick consistent connections using HF communication.
A device for receiving and radiating radio waves.
Automatic Repeat Request
The channel group that will be scanned by other radios on the net.
3G calls that are placed without respect to the Dwell timing of a channel group.
Signal sent by the TOD server that brings all outstations back to full sync.
Burst Phase Shift Keying - Quick wave bursts that keep the channel space free and allow for quick transmission rates.
Communication between two radios, achieved after both a call and response PDU has been sent.
A set frequency that radios can communicate over when programmed properly.
Traffic that occurs when there are too many radios attempting to communicate over a channel at once.
A group of channels that a radio must scan when in 3G mode.
Carrier Sense Multiple Access with Collision Avoidance - Helps radios avoid data collision over a channel.
Global Positioning System - informs a user of various information such as TOD and geographic location.
High Frequency (3-30 MHz)
The section of the RF spectrum that pertains to HF (3-30 MHz)
A radio that is part of the net and not a TOD server.
Protocol Data Units - Packets of data sent over the channel.
The measure of how well the radio waves are traveling on a channel e.g. a good channel is said to be propogating well.
Phase Shift Key - Radio waveform used in 3G.
Radio Programming Application - Computer software application that is necessary to program a radio operating in 3G.
Radios listen for calls when not engaged in linking or traffic.
Signal to Noise Ratio - The measurement the quality of a channel by comparing the magnitude of a received signal with the magnitude of the background noise on the channel.
Standardization Agreement (NATO)
All radios have the ability to scan the same channels at the same time.
3G calls that are placed at a specific time with respect to the Dwell timing of a channel group.
The time that all radios are synchronized to, either via GPS, or the TOD server.
Radio responsible for sending out broadcast syncs to keep outstation radios at full sync.
Very High Frequency (30-300 MHz)
Modulation of a wave sent over a channel.