NOW AVAILABLE ** New Program "TRANCO_1.exe"

This program analyses performance as a transmission line, of a
single-layer solenoid coil which may be inserted in an antenna wire.
The coil itself may be used as a very short vertical antenna at its
1/4-wave resonant frequency.

From the input data of length, diameter and number of turns, the
program calculates inductance, capacitance and resistance of the
equivalent transmission line. The secondary constants of
characteristic impedance Zo, phase shift, velocity factor, and
attenuation are calculated. Also the feedpoint input impedance, R+jX,
for when a coil is used as an antenna.

Because of the sensitivity to the environment of such an antenna and
its high Q it will be necessary to trim antenna length to a particular
wanted resonant frequency.

Download TRANCO_1 in a few seconds from website below and run
immediately. Filesize = 38 Kbytes. (It's at the bottom of the list.)
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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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