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Test of three ferrite antennas for receiving very low frequency (VLF) signals

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ferrite-ant-test

Test of three ferrite antennas for receiving very low frequency (VLF) signals.

Overview of ferrite rods

The ferrite rods have been recycled from old radios. The material and frequency range is unfortunately unknown.

Ferrite rod Length (cm) Diameter (cm)
Fer-A 20 1
Fer-B 16.5 1
Fer-C 14 1

Ferrite rods

Ferrite rods with windings

Ferrite rod Windings
Fer-A 350
Fer-B 280
Fer-C 220

Ferrite rods with windings

Measurement

Ferrite rod f with 3.3 nF f with 4.7 nF f (own)
Fer-A 37.19 kHz 31.38 kHz 216 kHz
Fer-B 40.98 kHz 34,56 kHz 239 kHz
Fer-C 52.97 kHz 44.64 kHz 309 kHz

Measurement of ferrite antenna

Ferrite antenna

Ferrite antenna

Ferrite antenna measurement

Ferrite antenna measurement

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Test of three ferrite antennas for receiving very low frequency (VLF) signals

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