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Ham Radio . Magnum Experimentum

Antennas, experiments, engineering and other articles of interest to radio folks.

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  • Radio Shorthand
    • Morse Abbreviations
    • Morse Code
    • Phonetic Alphabet
    • Q Signals
    • RST Signal Report
  • Tech Talk
    • Antenna Gain
    • Antenna Counterpoise
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    • Logging Software
  • Amateur Radio, Why?
  • About
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    • Contact
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    • Advertise
  • Subjects
    • Activities
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    • contesting
    • Connectors
    • Digital Modes
    • EmComm
    • Installations
    • interfaces
    • Introspection
    • Lab Shootouts
    • Miscellaneous
    • mobile
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    • News
    • Operating Tips
    • power supply
    • Accessories
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asymmetrical

Antenna topologies with an offset asymmetrical shape and feed point.

HF AHVD on 6m – Practical?

May 28, 2016October 17, 2013
Tall 6m AHVD making local contacts.

Will the KX4O version of the 20-10m Asymmetrical Hatted Vertical Dipole work on 6m? Yes, sort of.

Categories Antennas Tags 6m, AHVD, asymmetrical, hatted, KX3, measurement, NEC, Simulation, vertical dipole, VHF

Hatteras Ham Shack

May 23, 2018July 24, 2013
Hatteras Shack with the Asymmetrical Hatted Vertical Dipole antenna

I took the asymmetrical hatted vertical dipole to Hatteras beach to activate NA-067. I wasn’t very successful, but made a couple QSOs. Despite mixed results, the setting was spectacular. The vertical dipole worked.

Categories Antennas Tags 20m, AHVD, asymmetrical, beach, Dr. Dre, Hatteras, KX3, kx4o, KX4O/P, vertical dipole, verticals

Build this Vertical Portable HF Antenna

June 14, 2018July 19, 2013
This antenna fits into a baseball bag except for the tripod.

The Asymmetrical Hatted Vertical Dipole (AHVD) prototype is an easy to build, portable alternative to other freestanding vertical HF antennas such as the Buddipole.

Categories Antennas Tags 10m, 12m, 15m, 17m, 20m, AHVD, asymmetrical, DX-Eng., kj4faj, kx4o, measurement, NEC, portable, resin support blocks, Simulation, speaker stand, vertical dipole

Asy Hat Vertical Dipole

April 8, 2020July 14, 2013
Three views showing a how a planed vertical need not always be the classic 1/4 wave monopole.

We re-introduce the theory and origins of Cebik’s (W4RNL) Asymmetrical Hatted Vertical Dipole (AHVD) antenna with the hope to facilitate a vertical polarization portable 20-10m aerial for portable operations.

Categories Antennas Tags 10m, 12m, 15m, 17m, 20m, AHVD, asymmetrical, Bravo, dipole, DX-Eng., kx4o, NEC, Simulation, vertical dipole, verticals

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Topics & Keywords

2m 6m 10m 15m 20m 40m 43 foot 70cm 80m AHVD APRS Baluns battery BigIR copper Diamond dipole DX-Eng. EFHW Elecraft end-fed EZNEC Field Day Golden Packet hexbeam J-Pole Kenwood kj4faj KX3 kx4o measurement mobile NEC NMO NVIS packet PL259 QRP sdr Simulation SteppIR UHF vertical dipole verticals VHF
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