[Elecraft] Thans for help / wire length calculation 4 dipole? / misc.

[Earl W Cunningham]

Chris, KF6VCI wrote:

"....which would be the proper wire length for 7.040 Mhz and a 20 m
version, assuming a worst case of only 2 m hight?"
==========
A 40-meter center-fed dipole at 2m above ground should be 20.5333m long
for resonance at 7040 kHz according to EZNEC3.  This translates to about
67' 4-25/64".  The feedpoint resistance is about 64 ohms.  This assumes
nothing else nearby to influence the length or impedance.

This works out to L(feet) = 474.25664/f(MHz) if you want to estimate the
length of a 20m dipole.

"Average" soil conductivity was used in the model using the real/high
accuracy algorithm.

73, de Earl, K6SE