The Mad Dog Coil, DIY Wolf River coil alternative.
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Mad Dog Coils full product overview
1:10:43
Mini UNUNs 49:1 and 9:1 (production process)
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HAM RADIO: Base loading the DX Commander for 80M
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How to Use a Coil Antenna for Portable HF Ham Radio
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Brilhantes invenções DIY feitas por um faz-tudo inteligente – você não vai acreditar nisso!
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MY DIY 20-40 meter Air Wound Coil
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80m with your 66ft end fed half wave antenna?... How to easily make a 110µH loading coil.
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