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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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X50

Runt radials

March 24, 2017February 23, 2017

Antennas shipping with ineffective antenna decoupling are on the rise as manufacturers daringly advocate 1/12 wave radials work.

Categories Antennas Tags 2m, 70cm, Comet, decoupling, Diamond, GP-3, radials, X50

APRS AT Golden Packet 2016 NoVA Report

February 20, 2017July 19, 2016

Using modest gear, station #6 of the Appalachian Trail Golden Packet exercise confirms 9600 bps works well for passing packets north and south.

Categories Activities Tags 1200 bps, 9600 bps, APRS, ATGP, Diamond, Golden Packet, Hawksbill, Kenwood, packet, TM-D710A, X50

APRS Golden Packet Gear

March 6, 2015July 13, 2014
Kenwood D710A and 10AH Tenergy Lithium battery

Shown is a minimal, but effective collection of gear for the APRS Golden Packet Appalachian Trail event.

Categories Activities Tags APRS, Diamond, Golden Packet, Kenwood, speaker stand, TM-D710, X50

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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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