Antenna Requirements And Attachment; Customer; Assistance; Installation And Start-Up - Cobra MARINE MRF75 Owner's Manual

Vhf marine radio
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Intro
Operation

Customer

Assistance

Antenna Requirements
And Attachment

Installation And Start-Up

Customer
Installation
Assistance

Antenna Requirements And Attachment

Secondary Icons
Antenna Requirements
Your CobraMarine
VHF radio requires an external marine antenna
to send signals into the air and to receive them. The radio is arranged
to use any of the popular marine VHF antennas, but it is up to you to
Notice
Caution
choose which antenna to use.
Customer
Warranty
Assistance
Since it represents the link between your radio and the outside world,
Cobra
®
suggests you purchase the best quality antenna, coaxial cable,
and connectors you can. This is best accomplished with the advice
and guidance of a knowledgeable dealer who can assess the variables
Customer
Assistance
involved with your particular boat and preferences.
WARNING
Compliance with FCC requirements for Radio Frequency Exposure is
the responsibility of both the antenna installer and the radio operator.
Caution
Warning
Safe Maximum Permissible Exposure (MPE) Radius
To avoid health hazards from excessive exposure to RF energy, FCC OET
Bulletin 65 establishes an MPE radius of 10' (3 m) for the maximum power
of your radio with an antenna having a maximum power gain of 9 dBi.
This means that all persons must be at least 10' (3 m) away from the
antenna when the radio is transmitting.
Installation Requirements
A) An omnidirectional antenna with a gain not greater than 9 dBi must
be mounted at least 16.4' (5 m) above the highest deck where people
may be during radio transmissions, measured vertically from the lowest
point of the antenna. This provides the minimum separation distance
to comply with RF exposure requirements and is based on the MPE
radius of 10' (3 m) plus the 6.6' (2 m) height of an adult.
B) For vessels without structure to mount the antenna as described in A,
it must be mounted as follows AND all persons must be outside the
10' (3 m) MPE radius during radio transmissions. The antenna must
be mounted so that its lowest point is at least 3.3' (1 m) vertically above
the heads of all persons during radio transmissions.
30 English
Warranty
Secondary Icons
Warning
Intro
Operation
Customer
Installation
Assistance
Installation And Start-Up
Installation
Radio Operator Requirements
Secondary Icons
Do not transmit when anyone is within the MPE radius of the antenna unless
that person or persons are shielded from the antenna by a grounded metallic
Notice
Caution
Warning
barrier. This is especially important on vessels with antennas mounted as
described in B where no one may be within 9' (2.8 m) horizontally from the
Notice
base of the antenna during transmissions.
Main Icons
FAILURE TO OBSERVE THE ABOVE LIMITS MAY EXPOSE THOSE WITHIN
THE MPE RADIUS TO RF ENERGY ABSORPTION IN EXCESS OF THE FCC
MAXIMUM PERMISSIBLE EXPOSURE. IT IS THE RADIO OPERATOR'S
RESPONSIBILITY TO INSURE THAT MPE LIMITS ARE HEEDED AND THAT
NO ONE IS WITHIN THE MPE RADIUS DURING TRANSMISSIONS.
Intro
Operation
Coaxial Cable Socket
Installation
Secondary Icons
Notice
Customer
Warranty
Assistance
Antenna Requirements
And Attachment
Customer
Assistance
Caution
Warning
Customer
Warranty
Assistance
Antenna Lead Attachment
Customer
Once the antenna is installed, the Coaxial Cable Lead can
Assistance
be attached to the socket at the back of the transceiver.
CAUTION
Attempting to transmit without an antenna attached
will damage your CobraMarine
VHF radio.
Caution
Warning
Nothing comes close to a Cobra
®
31

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