This article is within the scope of WikiProject Amateur radio, which collaborates on articles related to amateur radio technology, organizations, and activities. If you would like to participate, you can edit the article attached to this page, or visit the project page, where you can join the project and/or contribute to the discussion.
It means Alternate (Temporary Address), Portable (Walking or Cycling), Mobile using the vehicles or inland boats' electric supply, MM is MARITIME MOBILE i.e. it is on a ship at SEA not on inland waters - rivers, lakes, canals. It requires the permission of the Ships owners and Master to be operated. In the UK there is no AM - Aeronautical Mobile except under special conditions. G4YRS. — Preceding unsigned comment added by 184.108.40.206 (talk) 17:41, 10 February 2015 (UTC)