Craig & fellow listeners - NRC Night Pattern Book, ca. mid-80's, featured 'Frequency and Power Relationship' chart. 540 - 1600 divided into groups from 540 - 560 to 1520 - 1600. Against them, power plotted onna spreadsheet. Resulting ranges in miles given for ' .5 MV/M countour assuming ground conductivity of 20 and 1/2 wave antler in all cases. Based upon 1954 FCC ground conductivity curves.' Interestingly, during this primitive non-digital era, the B-52, flying still, projected to do so for another fifty years, was sketched on cocktail napkin at Hotel VanAllen, Dayton, Ohio. Primitive, those non-digitalis scientistas.
What immediately impresses, 250W on 550 yields radius of 110 miles, a mere five miles less than 115 mile radius kicked out by 50 KW on 1520 - 1600. 50K/snots at 550 yields radius of 335 miles, almost triple its yield on 1520 - 1600. You quickly discern, for any standard power you flings up de pipe - .25, 1, 5, 10, 25 & 50 K/snots - 550 yields radius appx. triple that of 1520 - 1600. Interpolation not exact but close. May explain, as well, why former Nantucket CONSOLAN station, 194 TUK, was heard in Bahamas, days. As well, former 128.65 KHz, 100 K/snot USN NMUL Fleetcast mitter, Beavertail, Pt., Jamestown, RI, provided good daytime copy onna W Coast. Quaint, this Antique Modulation non-digitalis stuff. Really gots ta junk it, fast. Va va veem. You wanna copy? Send SASE to my box, below. Gonna senda you one. Useful. Dr. Zecchino's premise most powerful: "Hertzum minor - mucosa major." - "less Hertz - more snot." "Menor Hertz - mas moco." Dr. Zecchino PV Zecchino, T.D. Milspec Communications PO Box 633 Englewood, FL 34295-0633 _______________________________________________ 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