I've seen similar maps for Canada. The east side of the Rockies in Alberta is supposed to be superb for MW DX, and it has been proposed that this is due to the excellent ground conductivity. Interesting thread, indeed!........Walt
On Wed, Aug 8, 2012 at 12:09 PM, Craig Healy <bu...@dukes-of-hazzard.com>wrote: > An important aspect of losing signal when going away from the shore is the > ground conductivity in that area. That makes a significant coverage change > for any identical station by frequency, power and antenna. Local stations > like 1230, etc., cover far better in the middle of the US than in places > like New England. The FCC has a PDF map that can be downloaded to show the > ground conductivity in the US. Should be accurate for Canada near the > border as well. > > http://www.fcc.gov/**encyclopedia/m3-map-effective-** > ground-conductivity-united-**states-wall-sized-map-am-**broadcast-stations<http://www.fcc.gov/encyclopedia/m3-map-effective-ground-conductivity-united-states-wall-sized-map-am-broadcast-stations> > > Craig Healy > Providence, RI > > > _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com 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: irca@hard-core-dx.com
