Exhibit Question 7 Experimental Description

0003-EX-PL-2012 Text Documents

CBS Communications Services Inc.

2012-01-05ELS_121946

The	
  applicant,	
  CBS	
  Communication	
  Services	
  Inc,	
  is	
  a	
  wholly	
  owned	
  subsidiary	
  of	
  CBS	
  
Corporation	
  (CBS).	
  	
  CBS	
  is	
  the	
  parent	
  corporation	
  of	
  subsidiaries	
  that	
  hold	
  Radio	
  
and	
  Television	
  broadcast	
  licenses.	
  

CBS	
  wishes	
  to	
  determine	
  if	
  digital	
  spectrum	
  efficient	
  communication	
  radios,	
  capable	
  
of	
  simultaneous	
  voice	
  and	
  data	
  channels,	
  will	
  improve	
  the	
  efficiency	
  of	
  its	
  remote	
  
field	
  news	
  gathering	
  and	
  if	
  the	
  known	
  latency	
  and	
  “cliff	
  effect”	
  resulting	
  from	
  digital	
  
communications	
  might	
  adversely	
  effect	
  news	
  gathering	
  operations.	
  	
  	
  While	
  CBS	
  
believes	
  that	
  the	
  benefits	
  of	
  using	
  digital	
  spectrum	
  efficient	
  radios	
  are	
  well	
  
advertised,	
  the	
  resulting	
  audio	
  latency	
  issues	
  experienced	
  by	
  the	
  “on-­‐air”	
  talent	
  
during	
  live	
  broadcasts	
  could	
  be	
  problematic.	
  	
  

As	
  live	
  broadcasts	
  can	
  be	
  affected	
  by	
  digital	
  latency,	
  CBS	
  seeks	
  to	
  determine	
  if	
  this	
  
will	
  limit	
  using	
  digital	
  cues	
  and	
  “on-­‐air”	
  program	
  audio	
  foldback	
  to	
  live	
  talent	
  
broadcasting	
  from	
  remote	
  locations.	
  	
  
In	
  addition	
  to	
  voice	
  communications,	
  GPS	
  tracking	
  of	
  news	
  crews,	
  electronic	
  script	
  
transfers,	
  and	
  teleprompter	
  data	
  will	
  be	
  tested	
  using	
  the	
  proposed	
  equipment	
  and	
  
emission.	
  

This	
  project	
  will	
  use	
  the	
  Motorola	
  Mototrbo	
  series	
  of	
  radios,	
  including	
  two	
  mountain	
  
top	
  repeaters,	
  mobile	
  units,	
  and	
  handheld	
  portables.	
  	
  CBS’s	
  Denver	
  station	
  has	
  these	
  
radios	
  and	
  is	
  operating	
  them	
  in	
  the	
  analog	
  mode	
  since	
  digital	
  TDMA	
  is	
  not	
  permitted	
  
at	
  this	
  time	
  in	
  FCC	
  rule	
  Part	
  74.	
  

The	
  use	
  of	
  the	
  frequencies	
  has	
  been	
  coordinated	
  with	
  the	
  Society	
  of	
  Broadcaster	
  
Engineers	
  frequency	
  coordinator	
  for	
  the	
  Denver	
  area.	
  

	
  
	
  



Document Created: 0290-02-15 00:00:00
Document Modified: 0290-02-15 00:00:00

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