Bedienungsanleitung Cobra MR F55-D (Seite 13 von 40) (Englisch)

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Nothing Comes Close to a Cobra

Antenna Requirements

And Attachment

Installation And Start-Up

WARNING

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

barrier. This is especially important on vessels with antennas mounted as

described in B where no one may be within 9 ft (2,8 m) horizontally from the

base of the antenna during transmissions.

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 ENSURE THAT MPE LIMITS ARE HEEDED AND THAT

NO ONE IS WITHIN THE MPE RADIUS DURING TRANSMISSIONS.

Antenna Lead Attachment

Once the antenna is installed, the Coaxial Cable Lead can

be attached to the coaxial cable socket at the back of the

transceiver.

NOTICE

Attempting to transmit without an antenna attached

will damage your CobraMarine VHF radio.

English

Antenna Requirements

And Attachment

Installation And Start-Up

Antenna Requirements and Attachment

•

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

choose which antenna to use.

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

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.

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 ft (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 ft (3 m) away from the

antenna when the radio is transmitting.

Installation Requirements

■

An omnidirectional antenna with a gain not greater than 9 dBi must

be mounted at least 16.4 ft (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 ft (3 m) plus the 6.6 ft (2 m) height of an adult.

■

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 ft (3 m) MPE radius during radio transmissions. The antenna must

be mounted so that its lowest point is at least 3.3 ft (1 m) vertically above

the heads of all persons during radio transmissions.

Coaxial Cable Socket

F55D_Install_Eng:8186-F55_Install-Eng 12/8/10 8:24 AM Page 30

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