On Feb 6, 11:44*am, "Robert Lacoste" wrote:
Are my K factor figures wrong, or is my calculation
wrong somewhere ?

The links below lead to the AF values (K) for a self-resonant dipole
in your range of frequencies. It is possible that they could roughly
apply to your biconical, as it should be somewhat close to resonance
across that band.

The antenna in these links was/is associated with a field intensity
meter used in the VHF FM/TV broadcast bands.

The first link shows the multiplier for the voltage value measured by
the meter, in order to determine the value of the incident field.

http://www.pi-usa.com/pdf/71p-3-5.pdf
http://www.pi-usa.com/pdf/71p-3-7.pdf

RF