History Pre-1986 The system consisted of LB channels (44.MHz range) Heavy interference from other users Radios were limited in the number of channels available Unable to have multiple conversations at the same time If the radio was keyed up by accident no one could use that channel
15
Embed
History Pre-1986 The system consisted of LB channels (44.MHz range) Heavy interference from other users Radios were limited in the number of channels available.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
HistoryPre-1986
The system consisted of LB channels (44.MHz range) Heavy interference from other usersRadios were limited in the number of channels availableUnable to have multiple conversations at the same timeIf the radio was keyed up by accident no one could use that channel
1986 The Automatic Multiple Site Select (AMSS) system begins to be operational The 1st wide-area, 800 MHz trunked communication system in North America Provided multiple talk-groups, i.e. Dispatch, TACH1 Provided more efficient use of the same frequencies Provided Emergency button capabilities, private call, and paging1999 – 2000 Upgraded AMSS from Type 1 to Type 2 AMSS 1 technology was no longer supported