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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
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    • RST Signal Report
  • Tech Talk
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    • Logging Software
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  • About
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  • Subjects
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    • EmComm
    • Installations
    • interfaces
    • Introspection
    • Lab Shootouts
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    • power supply
    • Accessories
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patent

J Antenna Design Patent Grant

September 23, 2018October 10, 2017

USD798847S1 showcases one more incremental step towards a J antenna that works with masts and feedlines.

Categories Antennas Tags J-Pole, patent

Mast Mountable Antenna Patent Application

November 6, 2018July 22, 2017
Front view of Mast Mountable Antenna

The “mast mountable antenna” patent application is now available to review and critique.

Categories Antennas Tags J-Pole, patent

Copyrights, Designs and Intellectual Property

November 10, 2019January 30, 2015
The mix of protections for intellectual property

Is anyone else confused by the control some antenna designers try to maintain over the use of their unpatented creations?

Categories Miscellaneous Tags copyright, intellectual property, IP, patent

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Antenna and repeater parts

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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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