antennadivision

12 photos tagged antennadivision, from 1 member of Flickr Commons.

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The last upload was January 2026.

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26_0036174 Rohr Collection Image

from SDASM Archives

  • Chuck Walla said:
    I tagged this as Chula Vista plant because that looks like San Diego Gas and Electric's South Bay Powerplant and it's bunker oil tanks in the background.

    Could this be a feed for one of those jumbo Cassegrain antennas? Are the round things round wavegude couplers for different bands?

26_0043237 Rohr Collection Image

from SDASM Archives

  • Chuck Walla said:
    These are apparently Rohr's effort to make horn antennas for the Bell System. These were an artifact of five nines reliability. Most of the 3500-4000 MHz links these carried have been transitioned to (reliable) fiber.

    In a WalMart culture, where everyone is trying to get something for nothing, there's no room for five nines reliability.

    Suggested reading: Sagan, Scott, The limits of Safety: Organizations, Accidents, and Nuclear Weapons

    Installed horn antennas:

26_0069946 Rohr Collection Image

from SDASM Archives

  • Chuck Walla said:
    Year 1905 is in the notes. Many other RX-2 photos were shot on 05/25/1972, so I added that tag. Can't find a John Quaoy anywhere... John Quay?