On Tue, 4 Apr 2006 12:11:20 -0500, "Richard Fry"
wrote:

The effective electrical length of a MW monople radiator determines its
resonant frequencies, and that must include the velocity of propagation
along the structure -- which is a function of the height AND width of the
radiator (mainly), and the operating frequency.

WGOP 80.00° tall 125.2 meters tall 540 kHz
WWCS 63.50° tall 98.8 meters tall 540 kHz
WFTD 79.00° tall 64.0 meters tall 1080 kHz
KYMN 118.60° tall 92.3 meters tall 1080 kHz
WWLV 90.00° tall 47.2 meters tall 1620 kHz
WTAW 204.00° tall 106.7 meters tall 1620 kHz

http://www.fcc.gov/mb/audio/amq.html

The FCC provides BOTH measurements. The correlation is obvious. Any
association between resonance, velocity of propagation, height, width,
etc. and something like our 118.60° tall antenna needs a heap more
explaining than resonance, velocity of propagation, height, width,
etc. - but such explaining is a specialty occupation here in this
group.

73's
Richard Clark, KB7QHC