Originally Posted by Helen49
The 424 [later became Plessey 424] was a splendid piece of engineering but with only a 3cm wavelength worked superbly as a weather radar not quite as superb for seeing aircraft during heavy weather! The 424 with its various devices for removing weather clutter and a tilting aerial [the ATCO needed two pairs of hands at times!] had a maximum range of 25 miles and also had a one mile range setting enabling it to see airfield movement activities although, of course, not approved for that purpose.
Still is, still does, still do, still has, still isn't. And all with classic tangential fade...
If it hadn't been for John Townsend I would never have understood such a radar...