Spiderweb Coils: Why to use them

Описание к видео Spiderweb Coils: Why to use them

They come in many variations and names:
Spiderweb-, Spiral-, Basket-Weave, Honeycomb-Coils etc.

Support Roger on Patreon:   / kainkalabs  

They date from the earliest radio days (crystal-radio era) and the engineers 100 years ago already knew how to make a high-quality/high Q-factor reception coil.
(Ferrite-rod antennas only became available later)

Back in the days you were making your own antenna (aka coil) because every element of a (crystal-) radio cost a fortune.
A vacuum-tube/thermionic valve could cost a months salary.

Комментарии

Информация по комментариям в разработке

Похожие видео