IIRC that was the same principle that drove the old Conelrad system with multiple stations broadcasting emergency info on 640 and 1240. I'm not sure, but I believe that Conelrad started as a WWII service.
Russ Edmunds 15 mi NNW of Philadelphia Grid FN20id <[email protected]> -------------------------------------------- On Sat, 4/12/14, Ben Dangerfield <[email protected]> wrote: Subject: [NRC-AM] World War Two power reduction To: "AM DX" <[email protected]> Date: Saturday, April 12, 2014, 11:25 AM This was similar to the blackouts on both coasts when air raids were feared. And in the United Kingdom BBC statuins moved to one or two frequencies to prevent German plsnes from zeroing in on specific locations When I arrived in England in 1943 there were just two BBC programs: Home Service and Forces Program. The BBC also had transmitters at undisclosed locations aimed at continental Europe. Of course this combining frequencies did not stop the German air raids. Ben Dangerfield, Wallingford, Pa. _______________________________________________ The NRC AM mailing list Questions? [email protected] Antenna Pattern Book Now Shipping AM Radio Log 34th Edition SOLD OUT FM Atlas 21st Edition Close Out Prices! Details at http://www.nrcdxas.org _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
