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104-10171-10032 JFK Assassination Records Archives 1 (7/18/1962)

handle is hein.jfk/jfkarch13401 and id is 1 raw text is: 
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12 5 JUL 1962


#  19-120-19


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                                                                  PROCESSiNG
 DISPATCH                 IO

 %'.Chief of Station, JM AVE                                         Q11111 Ia___s



   Chief, Task Force V

Atl  orlatJaT~~wmz


   ACTION: At your discretion

   rs      uF-211     e Jiane 1962

       1.  A. D. Ring & Associates, consulting radio engineers in Washington, D.C.,
  have recently copleted a study on the effectiveness of a special audio service to
  the Bavana area.  The study is attached herevith. Its conclusions are thats

            a.  Operation with two lov-pover transmitters and 35-root antennas would
  result in a .liaited audio service along the shore line and to the rising ground
  imdiately.  inland. The signal would be very weak and subject to interference
  free teylvislc  slationa on the adjacent channel and could be jammed with minimum
  effort.

            b. A moderate increase in antenna height and a small increase in power
  would increase the service only a small amouit and would not produce any
  significant itprovement or render jammin particularly difficult.

            c. Transmission from a height of som 5000 feet, using only moderate
  pover (100 watts to 1 kilowatt), would result in a significant inprovemaent in
  service in all areas and produce a signal requiring considerable effort to jam.

    2. As these con.lusions suggest, transmissions from an airplane vould be the
  mt   effective, while transmissions from. the surface with antennas of up to 35
  feet have linited effectiveness. Nevertheless, Reference and other debriefings
  of persona cong  out of Cuba have given evidence of the apparent effectiveness
  of the ANSPEL TV intrustenu in the Havana area and indicate that they are worth
  continuing until some more effective medium is put into use.


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