On Sun, 04 Jan 2004 22:34:19 GMT, Brian Whatcott
wrote:

Lessee: 23 feet, say 7 meters is a quarter wave
so a wavelength is 28 meters.
300/28 = 10.7 MHz or a little lower....

The wire in a glass whip can break.
Checking it for resonance would eliminate this possibility.

Brian W

The wire in the whip isn't a straight piece of wire. It's coiled
around a form to form a continuously-loaded shortened whip. The
electrical length of it is considerably longer than 23'. It'll
resonate lower than 10 Mhz somewhere......