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A quick Trans-Atlantic screening procedure for medium-wave SDR captures, as
outlined below, can save a lot of time when going through "gaggles" of files
representing hours of full-band reception. Less useful, a.k.a. "naff", files
can be given a cursory review for other DX or just be given the old heave-ho to
save time and hard drive space.
A reasonable TA opening (and the regional characteristics thereof) can be sized
up well by the reception quality of each of these major players:
NW Europe: (all UK) 693, 882, 909, 1089, 1215, 1341
NE Europe: (Lithuania) 1386
W Mediterranean (Algeria-Spain-Morocco) 531, 549, 585, 612, 621, 639, 684, 738,
774, 837, 855, 936, 1044, 1098, 1107, 1422
E Mediterranean and W Asia: (Syria) 783, (Egypt) 864, (Iran) 1188, (Greece +
Saudi Arabia) 1512, (Saudi Arabia) 1521, (Iran + UAE) 1575
other propagation check: 1179 is Romania or Spain/Canaries dominating?
Mid Africa: (Sao Tome VOA) 1530, (Benin TWR) 1566. If Mauritania 783 ever
comes back on, add that.
Deep Africa, not too much there usually but try for S. Africa and Botswana:
567, 576, 648, 657, 702, 729, 828, 846, 909 all of which have been heard in the
New England states and Canadian Atlantic provinces.
South Africa to US East Coast distances are similar to Down Under to West
Coast: well in excess of 10000 km. In both cases summer can be the best time
to DX those areas as noted by the Rockworks (OR) DXpeditions out west and Roy
Barstow's Cape Cod summer beach outings on this side of the continent.
Mark Connelly, WA1IONSouth Yarmouth, MA, USA
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