. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. Chapter 7 —COMMUNICATIONS EQUIPMENT AND OPERATIONAL PROCEDURES Changing Tape Some models of teletypewriters have the capability of preparing perforated tapes which can store the characters for automatic trans- mission. Procedures for changing the perforated tape are contained in the operator's instructions of those machines. FACSIMILE Many weather offices are equipped with fac- simile equipment used to receive and record maps, photographs, or messages. Facsimile equipment is being replaced by Naval Environ- mental
. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. Chapter 7 —COMMUNICATIONS EQUIPMENT AND OPERATIONAL PROCEDURES Changing Tape Some models of teletypewriters have the capability of preparing perforated tapes which can store the characters for automatic trans- mission. Procedures for changing the perforated tape are contained in the operator's instructions of those machines. FACSIMILE Many weather offices are equipped with fac- simile equipment used to receive and record maps, photographs, or messages. Facsimile equipment is being replaced by Naval Environ- mental Display Station (NEDS) which is covered in Chapter 9, of this manual. In addition, certain selected stations such as Fleet Weather Cen- trals, are equipped with special units called transceivers, which transmit as well as record the facsimile messages. Facsimile transmission may be accomplished either by wire (landline) or by radio. In the United States the method of transmission is principally by wire. Stations aboard ship or overseas receive facsimile weather charts by radio on certain designated frequencies of Navy broadcasts or by inter- cepting other transmitted frequencies contained in the Worldwide Marine Weather Broadcasts manual. ALDEN FACSIMILE The Alden Weather Map Receivers are fully automatic, continuous weather map receivers which use the simple electromechanical principle of the Alden recording technique and Alfax electrosensitive paper on which electricity is the ink. The two types in general use today are the Alden Standard All Purpose 19 Recorder (fig. 7-5), and the Alden 18 Auto Select Fac- simile Recorder, which is available in the con- sole model and the bench model (fig. 7-6). The paper used in the recorder is white and comes in 170-foot rolls. A crisp sepia map on a clean white background is produced. The paper is thin and suitable for reproduction di- rectly by the Bruning or Diazzo (Ozalid) pro- cess. It is packaged in a sealed plastic bag and can be
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Keywords: ., bookcentury1900, booksubjectmeteorology, booksubjectunitedstates
