Remember that WARK is off the back of WTOP's pattern. WTOP has something
like 1.5V/m @ 1 km toward WARK, not the 4+V/m like the front of their
pattern, or the 2.8V/m RMS of the pattern. The stations are about 54 miles
apart.


"Mark Howell" wrote in message
...

I certainly hope so, since they are 30 kHz apart. But there is a real
problem with first-adjacent channel interference. I reference a
statement submitted by Clear Channel SVP/Engineering Jeff Littlejohn
to the National Radio Systems Committee regarding a test involving
WTOP, Washington (1500) and WARK, Hagerstown, MD (1490). Daytime
interference from WTOP's digital signal was found to be "significant"
at WARK's protected 0.50 mV/M contour, and "noticeable" at its 0.75
mV/M contour.
The full report can be found at
http://www.am-dx.com/clearchannelrprt.pdf

Mark Howell