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Antennas

Who are the most known "Marina Antenna" manufacturers?

Comrod A/S

Banten

Digital Antenna

Furuno USA

G.A.M. Electronics

Globalstar

Glomex Marine Antennas

JRC

KVH Industries

Metz Communication

Shakespeare

What has to be considered if you buy an Marina Antenna?

• There are several things to be considered:
• Type of antenna (Length)
• Gain of the Antenna (As more the antenna can "roll"on the boat position, as less the gain should be.)
• SWR = Standing wave ratio

What does "GAIN" mean?

• There is a simplified rule for the antenna range:
• If you have 3 db gain, you can transmit about 1,15 x the height of your antenna
• Gain of the Antenna (As more the antenna can "roll"on the boat position, as less the gain should be.
• Maximum gain is about 9dB

What to do to have a good transmission and receiption

• There are some very simple rules:
• Keep the antenna and the antenna cable away from flurouscent
• Route the antenna cable at least 1m away from other radio antenna cables, deoth sounder transducers, other antennas
• Use only coaxial cable of good quality, like RG 213 or Aircell 7
• Do not extend cables if you don't need to
• Do not coil coaxial cables, store it in a random jumble or a figure - eight to prevent magnetic anomlies