hi Walt, I'd like a copy of your measurements..73 Leon W5GY

Walter Maxwell wrote:
Quite some time ago, for the purpose of determining the effect of ground on the
terminal impedance of a dipole, I measured the terminal impedance of a
center-fed dipole, length 32.33 ft. at frequencies every 50 KHz from 14.0 to
15.0 MHz, at heights of 0, 1, 2, 3, 4, 5, 8, 10, 12, 14, 16, and 22 ft above
ground. A total of 252 individual measurements.

The equipment used for the measurements were a calibrated 40 ft RG-58 feedline,
[calibrated for electrical length and attenuation at frequencies f(x)], a balun
consisting of 100 #73 beads over a 2 ft length of RG-303 coax (included in the
feedline calibration), a General Radio GR-1606-A RF impedance bridge, a Ferris
Microvolter 70B signal generator, and a Collins 75A-4 receiver.

The input impedances appearing at the input of the feedline were then
transformed using the W2DU software program 'LINTRNSA' to obtain the impedances
appearing at the dipole terminals. (LINTRNSA appears in both the 1st and 2nd
editions of Reflections.)

The total data includes the R and X components of the impedances appearing at
the input of the feedline, the values of rho and swr at both the feedline input
and at the dipole terminals, and the R and X components of the dipole terminal
impedances. A total of 2016 data points.

All of the data listed above is in tabular form, ready for putting into a PDF
file for use by anyone who is interested in reviewing the data. The data is
presented in the same format as in Reflections, Tables 15-4, 15-5, 20-1, 20-2,
etc.

If anyone is interested I'll make the PDF file, and I'll be pleased to send it
to all who would like a copy. Just give me a jingle (via email, that is at
.

Walt