Sleuth RF with the Squeakie (audible RF field strength meter)
17:20
Field Strength Meter - make your own
17:52
Not QRP: 20 watts from just 2 transistors
29:40
Low V Regen Part4
21:33
Construção de layout de trem HO minúsculo - Ferrovia modelo 4x6
14:31
Building a Field Strength Meter.
9:59
Electromagnetic Field Strength Meters Don't Agree (#1049)
18:00
Dentro do Horten, a Asa Voadora
16:05