For Fibreglass and Wood Boats

Antennas don't work unless they are mounted on a metal structure such as a car, this metal base is called a ground plane

If there is no ground plane then one has to be simulated! , such is the case of ground independent antennas.

If you mount an antenna on a fibreglass or wood boat you will need a ground independent antenna these antennas do not supply their own ground plane, but they simulate them, this is important to note as a ground independent antenna never works better than an antenna mounted on its own ground plane such as a metal car or boat.

Ground independent antennas have a higher angle of radiation

Ground independent antennas are very narrow banded

Ground independent antennas are DC grounded ( reads a dead short at the connector)

You should avoid cutting the coax shorter than 3.1mtrs

If you have excessive coax try to run it in a wide loop - do not tightly coil it

Inside the white base is a coil and capacitor that are tuned to the antenna top, it turn the antenna top is tuned to the base so if you damage the antenna top the replacement antenna will not necessarily be perfectly tuned to the existing base , so it is important if you can , test with a SWR meter if you replace the antenna. Mobile One tunes every single marine antenna before it leaves the factory.

Aluminium or metal Boats

Ground independent antennas will work ok on any metal boat - But a non ground independent antenna using the boat as a ground plane will work much better. Most 27MHz CB antennas can be tuned to 27.880MHz on a boat, The longer the antenna the better the performance - Call Peter on 0246556677 for more info.