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 with windings
| Ferrite rod | Windings |
|---|---|
| Fer-A | 350 |
| Fer-B | 280 |
| Fer-C | 220 |
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 |
Ferrite antenna
Ferrite antenna measurement
