An off center
fed ocf dipole
RF Speech Clipper
for Yaesu MH-31
Arduino Tiny
Keyer Project
| Propagation Solar Cycle | Click ↓ |
Votes ↓ | Flag ↓ |
| Dx propagation wwv predictions A dynamic collection of propagation information gathered from many different sources |
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| HF Propagation Using Solar Indices Quick Guide to HF Propagation Using Solar Indices |
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| HF and VHF frequencies recommended Amateur radio usable hf frequencies |
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| HF propagation aurora auroral troposphere HF Propagation Tools and Solar |
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| HF Propagation predictions software This program predicts the most likely operating frequencies and signal levels for high frequency shortwave radio propagation paths on specified days of the year and hours of the day |
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| Propagation Tools The Solar Flux Index is a gauge of solar particles and magnetic field |
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| Radio Propagation Introduction Ham Radio operators, shortwave radio enthusiasts often talk about propagation |
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| Solar Activity and Climate Space weather may also in the long term affect the Earth's climate. Solar ultra-viole |
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| Solar activity and geomagnetic forecast a daily deterministic and probabilistic forecast, for next three days, of geomagnetic activity |
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| Solar Cycle Progression The charts on this page depict the progression of the Solar Cycle |
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| Solarham space weather Solar Cycle 24, Spaceweather, Amateur Radio VHF Aurora |
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| Top Band 160 meters This band is particularly challenging, and almost exclusively cw for dx |
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| Understanding Solar Indices Long distance HF radio communications is made possible by a region of charged particles |
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| VOACAP Online Prediction Services Hf propagation prediction and ionospheric communications analysis |
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Modif. May 13 2026
 The 160 meter dipole is constructed from #12 stranded insulated wire the feedpoint uses a section of pvc pipe, the ladder line loops through the pvc pipe to provide strain relief |
The capacitor will help raise the radiation resistance at the feed point, for permanent use, we would adjust the value of the capacitor as well as L2 until we optimized the match |
 Double Half Delta pressappoco come una Beverage. L' antenna è costituita da due triangoli di filo sospesi a un metro e mezzo da terra |
 VLF Loop for Radio Direction Finding with two crossed loops, one North/South, one East/West, radio-direction finding on VLF is possible |