Chapter 9 — SPECIALIZED METEOROLOGICAL EQUIPMENT AND THEIR USES 



NWS 

 REDWOOD CITY 





WES 

 PRIMARY 



T COAST TIE 1 



.INE 



U.S. TRUNK 





_ 











NAVWEASERVFAC 

 ALAMEDA 





NWSED 

 BRUNSWICK 









NWSED 

 MOFFETT 





COAST GUARD 

 NEW YORK 









PMR 

 PT. MUGU 









NWSED 

 PATUXENT RIVER 



FNWC 

 MONTEREY 



FWC 

 NORFOLK 



PRIMARY 









CONTROLLER 



BWAR 7S07 



EAST 



CONTROLLER 





NMFS 

 LA JOLLA 











NAVWEASERVFAC 

 JACKSONVILLE 







COAST TIE LINE 





NAVWEASERVFAC 

 SAN DIEGO 





NWSED 

 CECIL FIELD 









SAN DIEGO STATE 

 UNIVERSITY 







209.433 



Figure 9-4. — East and West Coast Tielines. 



increments. A 70-second tape cartridge is also 

 available for testing purposes. 



The 3- or 6-minute tapes are most fre- 

 quently used since, at 3,000 words per min- 

 ute, this tape will receive most messages likely 

 to be sent. Tapes can always be changed to 

 either longer or shorter tapes as desired or 

 when requested. Play back to a teletypewriter 

 can be accomplished at speeds of 60, 75, or 

 100 words per minute as selected on the CAT 

 unit. 



The general application of the CAT unit is 

 to accept digital data by monitoring teletype 

 lines and to compactly store this data on a 

 continuous loop magnetic tape cartridge as men- 

 tioned previously. Data stored on tape may be 

 transmitted at much higher rates via telephone 

 facilities or simply retransmitted over teletype 



lines at a time more convenient for operation. 

 In a similar manner, data may be received 

 from telephone facilities at a lower rate, per- 

 mitting a page printout of hard copy or re- 

 transmittal at higher rates via telephone 

 facilities. The modes described may be manually 

 selected or, in an automatic mode, the tele- 

 phone receive mode followed by a teletype trans- 

 mit mode may be continually cycled as data 

 presents itself. 



On-Line Display System (OLDS) 



The OLDS logic unit is an electronic unit 

 within the plotter consisting of several "cards" 

 upon which are mounted components, such as 

 transistors and resistors. It serves to transfer 

 the incoming data into data which can be used by 

 the plotter in making maps. The driver portion 



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