The radio is a wireless form of communication which is transmitted through sounds or signals by electromagnetic waves directly through space to a receiving set. Some types of radio communications are HAM radios, CB (Citizen Band) radios, Cell Phones, Radio Scanners and Walkie-talkies. Radio communications are widely used in the United States and majority of it is used by law enforcement and emergency services. Police/Sheriff, Fire-Rescue, Highway Patrol, Ambulance and EMS are some of the agencies that use radio communications.
There are many factors that contribute to radio failure. These factors could delay law enforcement and emergency services getting to a distress call immediately. Some of these factors are; lack of maintenance on a radio communication system, causing it to crash. This happened at the Palmdale Air Traffic Control Center, when a technician failed to perform required maintenance. This caused the communication system even the back up system to shut down for more then three hours. Radio Failure also occurred during the September 11 attacks, where the radio system used by city firefighters failed.
The Term Paper on Communication Systems High Frequencies
... the second half cycle (t = T/2 to t = T). Communication System The totality of the mechanism that provides transfer of information ... To = reference absolute temperature = 290 K F = noise factor Noise Due to Amplifiers in CascadeFriiss! | Formula Over-all noise ... and electrostatic waves in space are considered to be radio frequencies (RF). FCC Band Designations Frequency Range Designations 30! ...
These radios should have been replaced two years earlier, but the new radios never worked properly. Radio problems also occurred during the Cedar Fires in Southern California. When firefighters went face to face with the most destructive wildfire in California history, their most reliable method for communicating with each other may have been shouting. Mismatched radio systems left U. S. Forest Service crews unable to talk to their counterparts in other fire agencies.
Some firefighters resorted to palm-size Family Radio Service devices that sell for as little as $25 apiece after the failure of their regular radios, which cost thousands of dollars each. At times, supervisors had to leave their crews in trucks parked in the field and drive back to their base camp to get instructions because they couldn’t reach anyone by radio. The radio failure and communications failure in these cases caused a lot of lives to be lost and damages and delays. HAM radios are a great way of communication when normal communication is down, this way of communicating could have been used in during the Cedar Fires.
The National Radio Amateur Civil Emergency Service (RACES) is an organization that uses the HAM Radios. They provide local and long distance communications services in local, regional, national and international emergencies. When normal communication systems are overloaded, damaged, or disrupted because a disaster has occurred, or is likely to occur, an amateur station may make transmissions necessary to meet essential communication needs and facilitate relief actions. In the event of a major and sometimes even a minor emergency, when both conventional telephone and cell phone services can easily become overloaded with callers.
Radios may be used to supplement conventional communication means in certain situations, e. g. , police action or lock down. When radio communications are needed the way of using them will change, if it were a one-way (simplex), i. e. , only one person can talk at a time.
This way of communicating would work when two people are communicating. When multiple people are talking, radio communications can be switched to networking, where multiple people can communicate on one radio frequency. If there were an incident with multiple agencies involved, they could all use the same way of network communicating, but each agency be assigned a different frequency. SOURCES: 1. web followuplacenteroutage. pdf 2.
The Term Paper on Web Services part 1
Web Services. Web Services are not implemented in a monolithic way, but rather represent a collection of several related technologies. A new language was developed in the Internet back in 1999. What were the reasons for that? The old one was called HTML, and it was a gear for the whole internet, especially for the area called World Wide Web, development process. Now the Web outgrew its creator and ...
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