antenna.barko.devby Rothammel

hfmobileverticalwhipshortenedcompact

Mobile Whip

Shortened mobile whip antenna

Source: Rothammel, Vol. 2, Ch. 28.2, p. 182

Input Parameters

Frequency

MHz

Whip Length

m

Results

Whip Height

2.00m

Full λ/4 (no shortening)

5.30m

Shortening

62.3%

Loading Coil Reactance

54.2Ω

Loading Coil Inductance

609.57µH

Efficiency (approx)

25.7%

Bandwidth (approx)

5273kHz

Diagram

Radiation Pattern