Download program COAXRATE from website below in a few seconds and run
immediately. Easy to use.

It calculates, amongst other useful things, power loss and temperature rise
in solid polyethylene coaxial cable, versus dimensions, RF power input, SWR
etc., under various physical conditions. It is at least as accurate as
manufacturers' own rating data. It takes into account ambient temperature
which almost invariably is ignored.

Cable power rating depends on whether it is used at midnight in mid-winter
in N.Alaska, or at noon, in mid-summer, in New Mexico. Data in ARRL
handbooks is fairly useless.

Program COAXRATE.
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Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
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Reg, G4FGQ