Wireless communications were reportedly maintained for 72 hours between Carpathia and Sarnoff , but Sarnoff 's involvement has been questioned by some modern historians .
Also employed by the Marconi Company was David Sarnoff , who later headed RCA .
Wireless communications were reportedly maintained for 72 hours between Carpathia and David Sarnoff , but David Sarnoff 's involvement has been questioned by some modern historians .
Also employed by the Marconi Company was David Sarnoff , who later headed RCA .