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Figure 2. Antenna Group AN/GRA-50, components..
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TM-11-5820-467-15
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CHAPTER 2 INSTALLATION
6. Common Names 7.   Description (fig.   2) a. Bag  BG-175,  made  of  heavy  canvas, is  used  to  store  all  components. b. Each  Reeling  Machine,  Cable,  Hand RC-432/G consists of a reel on which 160 feet  of  Wire  Assembly,  Antenna  CX- 7303/G is wound. A terminal hook on the loose end of Wire Assembly, Antenna CX- 7303/G attaches to Insulator IL-4/GRA-4. Halyard MX-2706/G is secured to a small hole in the Reeling Machine, Cable, Hand RC-432/G  frame.  A  spring  action  handle on the outer flange of the spool facilitates winding. c. Cable Assembly, RF CG-678/U is 75 feet  3  inches  long  and  consists  of  cable RG-58A/U with a connector UG-536/U at each  end.  Cable  Assembly  RD  CG-78/U connects   between   Insulator   IL-4/GRA-4 and the radio set. d.  Insulator   IL-4/GRA   is   a   phenolic housing which has two terminals for con- nection of the antenna wires and a female coaxial  fitting  for  connecting  Cable  As- sembly   RF   CG-678/U.   Insulator   IL-4/ GRA-4  is  installed  at  the  center  of  the antenna  assembly. e. Halyard  MX-2706/G  consists  of  75 feet   of   l/8-inch   diameter   Dacron   rope. A snaphook fastener at one end of the rope connects to Reeling Machine, Cable, Hand RC-432/G, a snaphook fastener and a lead weight is attached to the other end. f. The  tape,  measuring  (tape  measure), made  of  nonconducting  woven  fabric,  is 156 feet long. It is calibrated on one side in feet and on the other side in frequency. It is used to measure the length of antenna necessary  for  operation  at  any  given  fre- quency.  The  tape  measure  is  marked  at each 100 kilocycles (kc) from 1.6 to 6 mc, at  each  200  kc  from  4  to  6  mc,  at  each 500  kc  from  6  to  10  mc,  and  at  each  mc from 10 to 20 mc. 7