Antenna building #2 - EFHW Antenna - figuring out the right core size
21:41
Antenna building #1 - EFHW Antenna - theory and practice of the broadband transformer
19:45
U01 emergency communications Antenna - 80/60/40/20/17/15/10m EFHW
12:05
Which end fed half wave transformer should you use for running high power? #hamradio #antenna
18:19
EFHW transformer re-visited: improved core material & easier efficiency measurement
17:50
Something you should know when making a DIY EFHW!
46:08
Best 49 to 1 UnUn for EFHW End Fed Half Wave HF antennas
12:14
How to wind an End Fed Half Wave Autotransformer
12:38