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Ham Radio . Magnum Experimentum

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

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  • Home
  • Radio Shorthand
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    • RST Signal Report
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    • Antenna Gain
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    • Logging Software
  • Amateur Radio, Why?
  • About
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  • Subjects
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    • contesting
    • Connectors
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    • EmComm
    • Installations
    • interfaces
    • Introspection
    • Lab Shootouts
    • Miscellaneous
    • mobile
    • NEC Shootouts
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    • power supply
    • Accessories
    • Promoting
    • Propagation
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monopole

Anatomy of a low frequency aviation radio beacon

January 1, 2021May 18, 2020
Transmitter with its high voltage terminal supply energy to the insulated tower.

Aviation LF/MF beacons provide the opportunity to admire electrically-small antenna design on a macroscopic scale.

Categories Antennas Tags Aviation, beacon, LF, measurement, MF, monopole, tophat

Jpole vs. Coaxial Dipole EZNEC Shootout

May 23, 2018November 27, 2008

This J-Pole, Monopole, Coaxial Dipole VHF EZNEC shootout addresses a comment made that no models exist for j-pole and coaxial dipole antenna simulation.

Categories Antennas, NEC Shootouts Tags coaxial, dipole, J-Pole, monopole, VHF

1/4 Wave Monopole vs. 1/2 Wave J-Pole EZNEC Shootout

November 3, 2018November 6, 2008

Myths abound concerning how J-Poles do so well. Here is an EZNEC shootout between a 2 meter J-Pole and a Monopole with radials.

Categories NEC Shootouts Tags 2m, Cebik, EZNEC, J-Pole, monopole, NEC, Simulation

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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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