Our range of high quality antennas and accessories are intended for use in voice, data, GPS, marine based radio and other systems. Specially designed and manufactured to provide exceptional performance and to withstand the maritime environment. We recommend fiberglass tube antennas, which are coated with smooth polyurethane and will last for many years. Small boats may also use stainless steel whip antennas because they are rugged and can withstand lots of mechanical forces during heeling of the small vessel.
Maritime mobile amateur radio
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Marine VHF radio
Most countries' amateur radio licences allow licensed operators to install and use radio transmission equipment while at sea. Such operation is known as maritime mobile amateur radio. The following notes are made with regard to the UK "Full" amateur radio licence terms, provisions and limitations,  and so may vary slightly from other amateur licences. Maritime mobile operation is defined as operating a transmitter that is located on any vessel at sea.
So here we will try to provide you with some of those basics and caution you that we are not providing answers to every possible factor or situation. The primary difference between the two is the frequency ranges that they operate in. Probably, the most important concept here is that: "They allow the operator to select a frequency based on atmospheric conditions to establish communications over varying distances. This plays an important role in long distance ship to ship or ship to shore communications.