--- Begin Message ---
https://commons.wikimedia.org/wiki/File:United_States_Effective_Ground_Conductivity_Map.png
Had I been live during this thread, I too would have said Oklahoma`s red dirt
with iron oxide can`t be the cause, cf the Iron range of Michigan.
I would hypothesize that the Ogallala Aquifer (what`s left of it) has something
to do with the large 30 G.C. area in TX-OK-KS-NE. Not a 100% match of course,
but quite a bit of overlap:
https://en.wikipedia.org/wiki/Ogallala_Aquifer
How fortunate we are here in the great center, since so much of the USA is way
lower in GC.
WNAX 570 Yankton SD is here on groundwave any day; only problem KLIF Dallas
also 570. Also: KWMT 540 Fort Dodge IA vs another Metroplex station. 550 has
signs of Midland TX and 580 signs of Lubbock TX under the Kansans. 670 KLTT
Denver is barely audible on daytime groundwave, and sometimes WSCR Chicago tho
by then I`m not certain it`s GW rather than daytime skywave, or a mixture with
sporadic E affecting MW.
73, Glenn Hauser, Enid
--- End Message ---
_______________________________________________
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]
