![]() ![]() In international waters, amateur licensees must only use frequency bands allocated internationally in each of the three ITU Regions. So, amateur station A0AA, operating from a vessel within the territorial tidal waters of a country identified by the prefix B would identify itself as B/A0AA/MM when transmitting. The normal procedure is to prepend the national locator of the host country to the normal callsign, separated with another slash. ![]() ![]() When in the territorial waters of other countries, CEPT rules apply and these can get complex. In international waters, this is not necessary. in the second position in their callsign). adding D for Isle of Man, M for Scotland etc. UK amateurs have a system of regional secondary locators that they must use within UK territorial waters (e.g. It is not a requirement that the station transmits its location, but of course this is advisable, and easy to do with on-board GPS location. There is no requirement to keep a log of calls, but a written record of information about frequencies, times, operators and their callsigns can be valuable. In such cases, the master of the ship has the right to demand radio silence from the amateur operator. This does not affect those who intend to install a transceiver on their own boat, but is relevant to anyone who intends to make transmissions from a ferry or other passenger ship. There is a requirement that the amateur radio equipment must only be installed with the written permission of the vessel's master. Operating on vessels on inland waterways is defined as mobile working, and so requires /M to be added to the callsign, not /MM as for maritime mobile operation. This means any manned structure afloat outside of the high-water mark. Maritime mobile operation is defined as operating a transmitter that is located on any vessel at sea. 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. ( June 2017) ( Learn how and when to remove this template message) You may improve this section, discuss the issue on the talk page, or create a new section, as appropriate. The examples and perspective in this section deal primarily with the United Kingdom and do not represent a worldwide view of the subject. ![]()
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