Topband: Tee Antenna dimensioning

[Richard Fry]

A NEC4.2 model of a tee using a 60-ft tall vertical conductor shows 29 -j 
0.04 ohms at 1.9 MHz when connected at the top to the center of a horizontal 
conductor 89 feet in length.

The tee was base-driven against 16 x 33-foot radials buried 4 inches in 5 
mS/m, d.c. 13 earth.  Conductor ODs are 3 mm.

Feedpoint SWR is less than 1.5:1 over a 60 kHz bandwidth (referenced to 29 
ohms).

Maximum far-field antenna system gain is -0.73 dBi @ 24 degrees elevation, 
excluding any matching losses.