Los mejores filtros de paso de banda para radioaficionados asequibles que no te puedes perder.
28:50
DIY 20 Meter Bandpass Filter for Ham Radio
17:40
BETTER than a Sporty Forty: Build a 40 meter Coil for Chameleon SS25 Whip!
16:30
7 "No Tuner" Ham Radio Bands with One 63' Endfed Wire -- That's Not Possible! The LEFS8040 Does it!
12:22
This Awesome "10 Meter Radio" Has a SECRET!
26:51
Downloading Images From US Military Satellites
13:15
Understanding 4:1 Baluns and UNUNs for Amateur Ham Radio Antennas
29:08
I built a 1,000,000,000 fps video camera to watch light move
14:48