Mar 062011

Note from Brian:

It is my SOP to give attribution to photographers whose work is displayed on this Flight Blog. In this case, though, neither Allen nor I have any idea who compiled these or who took them in the first place. If anyone has any knowledge to that effect, please let me know.

  2 Responses to “Aircraft Detection before Radar – submitted by Allen Winter”

  1. Well, they certainly are interesting and imaginative methods for increasing our listening abilities. Any idea of the vintage? WWI?

    Paul Fiebich

  2. Dear Paul,
    They look to me to be WWI vintage but I’ll bet they continued to use some of this type gear in England through WWII to augment their RADAR.