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frequently used at construction job sites, and with
inexpensive consumer radios such as LPD/PMR radios.
The range is typically 1-5 km, depending upon the terrain
and many other factors.
Repeater Operation
Repeater systems use two frequencies: one transmits from
the radio to a central repeater; the other transmits from the
repeater to other radios in the system. With a repeater
based system, the repeater is located on top of a tall
building or on a radio tower that provides great visibility to
the area of operation. When a user transmits (on an input
frequency), the signal is picked up by the repeater and
retransmitted (on an output frequency). The user’s radios
always listen for activity on the output frequency and
transmit on the input frequency. Since the repeater is
located very high, there is a very large line of sight.
Where To Get More Information
By itself, this manual really can only provide some basic
knowledge of what you need to know to have fun scanning:
just how to program and use the scanner. Do understand
more about wave propagation and radio communication,
You need more specific knowledge about RF technology or
You need to be licensed radio amateur.
Information On The Internet
The Internet is a great source for current frequencies and
information about scanning.
Many web sites have lists of frequencies for your area. You
can use a search engine to find and use them.
Make a list of the agencies you want to listen to, then look
up the frequencies and systems used by those agencies.
If you have access to the internet, you may want to visit the
following web sites for additional information:
•
www.racescanner.eu
-
Race frequency
information, programming software and
accessories.
•
http://groups.yahoo.com/group/AE230H
-
A mailing list of a group for people interested in
discussing the AE230H.
