Hy-Gain AV-18HT Instruction Manual page 35

A. 80 meter bi-directional pattern (all SW positions 3) refer
to Figure 1, Part 2 "Radiation Patterns"
NOTE: Due to close electrical spacing (1/4 wave) on
80 meters for Broadside (position 1) and Endure
(position 2) the SVWR may be somewhat higher than
1/2 wave spacing. SW3 selects direction
B. 40 meters all switches in position 1 selects Bi-
Directional patterns. Use SW2 for broadside (position
1) Endfire (position 2).
C. All switches in position 2 selects cardioid pattern. SW4
selects direction of cardioid pattern.
NOTE: All connecting lines are exaggerated in length. These
lines must be direct and short as with any coax hook-up prac-
tice.
Figure 5
Typical installation (2) 18HT-S Phased for 80 and 40
Meters Selectable Broadside and Endfire Patters on 40
Meters Selectable Broadside and Endfire Patterns on 80
Meters Selectable 2 Directions Cardioid on 80 Meters