A Antena HF Invisível
27:20
HF Antenna - 40 - 10m Self Build EFHW
27:25
Broken PC? You won't believe what's causing this computer problem!
24:59
JPC-12 Portable HF Antenna - Hidden Secrets
43:19
If I touch this tower, I die
25:13
Modifying RV Satellite Dish To Track Low-Earth-Orbit Satellites
11:54
1000 WATT 4 Band HF Vertical Antenna - Xiegu VG4 40/20/15/10
15:14
120 Meter Band - Digital Desert and the Russians
17:02