Antenna Model · Designer · closed-form
5/8-Wave Vertical
length = factor × λ × k · λ = 41.93 m @ 7.150 MHz
FIG.1 · 5/8-WAVE VERTICAL
Radiator
24.895m
Radials ×4
10.168m
Accuracy note
±~3%; needs a base matching network — trim to resonance.
±~3%; needs a base matching network — trim to resonance.
Method closed-form Cite ARRL Antenna Book Feed Capacitive — a base loading coil / L-network matches to 50 Ω.
- Requires a matching coil at the base regardless of ground system.
- 4 elevated, resonant λ/4 radials form the missing half of the antenna.