SECTION ONE
LICENSE INFORMATION
It is the responsibility of the user of this radio to ensure that all appropriate licenses have been
obtained prior to operation of the radio.
The FCC Rules and Regulations Part 80 document contains information on the licensing and
operation of VHF radios in the United States. Different applications have different licensing
requirements; however in general, if your boat already has a licensed fixed mount VHF radio, no
additional license may be required.
A FCC form 506 application for ship radiotelephone license is included with this manual. Any
additional applications or documents may be obtained by writing:
Superintendent of Documents
Government Printing Office Washington, D. C. 20402
For licensing information in Canada:
Department of Communication
300 Slater Street
Ottawa. Ontario
K1A OC8
Attn: DOS-PP
SECTION TWO
BEFORE BEGINNING
HOW VHF RADIOS WORK
The Humminbird DC5s hand-held radio is a VHF transceiver. This means that the radio has the
capability to both transmit signals as well as receive them, and operates in the VHF (very high
frequency) spectrum.
The marine band is a group of VHF frequencies between approximately 156 MHz and 163 MHz.
This band is divided into a number of discrete channels, which are numbered and further
categorized by use.
Within the marine band, 10 channels are designated for continuous weather broadcasts. These
channels are grouped into a "Weather Band" and designated "receive only" channels. You cannot
transmit on a weather channel.
The remaining frequencies are assigned for various purposes and given a channel number.
There are basically two different channel numbering and frequency assignment schedules
currently in use, which creates two different bands of frequencies: the USA band and the
International band. These two bands share the same frequencies but assign channel numbers
slightly differently, and allocate these channels for different uses.
A list of USA, International, and Weather bands including channel numbers, frequencies, and
descriptions of use is included in Section 6 of this manual.
AVAILABLE ACCESSORIES
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