Brenda Ann wrote:

The greatest boundary to bi-coastal AM DX is not geographical at all.. but
purposeful. Stations that have high power at night have very directional
arrays that protect other stations on the same frequency. Most on the west
coast have N-S or similar patterns that keep them from being heard on the
east coast. For instance, KOMA (or whatever they are this week) in OKC and
KKSN in Portland, OR must protect each other's nighttime coverage. (both are
1520 KHz).

An interesting point... I have yet to see a directional array here in the
ROK.. and it shows.. at night there are so many stations fighting over any
given frequency that it numbs the mind. Most of the winners are Russian and
Chinese. I have only ever heard one Japanese MW station here..

After viewing the following (below) FCC webpage, I do get the impression
there are fewer class-ND1, 50-KW unlimited, MW stations on the west
coast than in the east. Could that mean it's easier for the west coast
to hear the east, than vice versa?

http://www.fcc.gov/fcc-bin/amq?state...2=&EW=W&size=9


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