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The Radio Scanner
There is a buzz of activity happening all around you. You may or may not see it. You can hear all about it, if you tune in a scanner radio. It is referred to as a scanner. Scanners are digital radio receivers. They rapidly switch the radio frequency they receive.
Typically these radios receive F.M. Radio frequencies. Aircraft often use A.M. Radio frequencies. You will see the digital numeric readout changing rapidly, as the scanner searches for a frequency where people are talking. When the scanner detects a radio signal, it will stop scanning. The content on that channel will be played through the speaker. The squelch knob controls the sensitivity of how weak a radio signal the scanner will detect. Setting the squelch knob just above
the point where the white noise sound starts, is the ideal setting.
The types of broadcasts generally available, are:
Emergency vehicle services.
These include, police, ambulance, fire, and search and rescue.
Public services.
Featured are, taxis, and utility service companies.
Aircraft at airports, and planes flying over head.
Government agencies, including Forest Service, and Highway Maintenance, Coast Guard, and the Military. The most interesting, or popular broadcasts come from emergency situations. Police activities related to emergency services can peak your interest. Often the conversations contain organizational code words.
These are also called 10 codes. If you search the internet
or popular communication magazines, you should be able to find a list of these code words. There are variations to the 10 codes. Police departments in different cities use their own dialect of 10 codes. By listening to the context of multiple broadcasts, it is usually possible to understand and interpret the differences in these
code words. Broadcasts from aircraft in your area are frequently short in duration.
Often you will only receive a small piece of their conversation.
Air born Aircraft report their position and altitude occasionally.
Going close to an airport will give you a much richer source of aircraft communication. You can search for and find aircraft controllers giving taxi instructions to pilots. Requests for take off and landing permission become frequent.
There are basic model scanners available for around a hundred dollars. More deluxe models run $500.00 and up.
After a time, listening to the radio scanner will start to feel, like you have added a sixth sense. The invisible domain of radio traffic will open up a whole new world of information surrounding you.
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