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EMC Installation Guidelines
FELL equipment and accessories are designed to the best industry standards for use in the
recreational marine environment. Their design and manufacture conforms to the appropriate
Electromagnetic Compatibility (EMC) regulations, but correct installation is required to ensure
that performance is not compromised.
The guidelines given here describe the conditions for optimum EMC performance, but it is
recognized that it may not be possible to meet all of these conditions in all situations. To
ensure the best possible conditions for EMC performance within the constraints imposed by
any location, always ensure the maximum separation possible between different items of
electrical equipment.
For optimum EMC performance, it is recommended that wherever possible:
• FELL equipment and the cables connected to it are:
• At least 3 ft (1 m) from any equipment transmitting or cables carrying radio signals e.g.
VHF radios, cables and antennas. In the case of SSB radios, the distance should be increased
to 7 ft (2 m).
• More than 7 ft (2 m) from the path of a radar beam. A radar beam can normally be
assumed to spread 20 degrees above and below the radiating element.
• If possible the product is supplied from a separate battery from that used for engine
start. Power supply voltages below the minimum specified for a product, and starter motor
transients, can cause the product to reset. This will not damage the product, but may cause
the loss of some information and may change the operating mode.
• FELL specified cables are used. Cutting and rejoining these cables can compromise EMC
performance and must be avoided unless doing so is detailed in the installation manual.
Summary of Contents for WiMEA
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