N. B. C. Studio Marvels at Radio City (Nov, 1936)

N. B. C. Studio Marvels at Radio City


One of the modern wonders of the world is Radio City in New York. ‘ Principal of the Radio City attractions is the National Broadcasting System’s arrangement of studios. These occupy eleven floors, nine of which have no outside windows. They are ventilated by the most intricate air-conditioning system yet built. Air is forced through petroleum-coated glass wool filters and washed by seven and a half million gallons of water a year. Two hundred and fifty tons of rock wool was used in insulation and soundproofing. The studios are insulated from the building frame. They contain 265 synchronized AC clocks. A motor generator set is used one hour a year to double their speed when Daylight Saving goes into effect.

  1. KD5ZS says: March 8, 201011:04 am

    They didn’t have satellite communication in those days, only radio and telephone lines. I believe that VHF/UHF was still a research frontier.

  2. Casandro says: March 8, 201012:19 pm

    Well obviously they had cables back then. VHF/UHF feeders weren’t in widespread use till the 1950s I think.

    What’s more interresting is the “velocity microphone”. I don’t think many people know what that is. In a nutshell, it’s a directional microphone.

  3. KD5ZS says: March 8, 20103:56 pm

    Velocity and ribbon microphones get confused. Both were made by RCA and had a rather iconic shape. 75 years later some of these mikes are still in use.

  4. Casandro says: March 8, 201010:17 pm

    Bu isn’t a ribbon microphone mostly a velocity microphone? I mean most microphones work on velocity, only a few purely work on pressure.

  5. Jim Wood says: March 15, 201010:49 am

    Yes, a ribbon mic is generally a velocity mic, although ribbon mics that employ internal baffling to change the directional characteristic may tend to respond more to pressure gradients than the air velocity component. There were velocity mics that were not ribbons, but these were not common in broadcasting.

    I’ll bet that the NBC installation depicted in that artist’s concept sounded a lot better than AM radio does today, and was a good deal more varied and interesting in content as well.

  6. djkrugger says: July 7, 201010:41 pm

    “over 500 feet height prohibited by government as aviation hazard” LOL, surely lobbysts did their work!

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