EFHW transformer re-visited: improved core material & easier efficiency measurement
17:19
Antenna building #2 - EFHW Antenna - figuring out the right core size
23:39
End Fed Half Wave Transformers.......Are they as good as we think? #hamradio #hamr
9:31
EFHW Transformer - without capacitor: alternative winding pattern
9:52
How efficient is the best 100w End Fed Half Wave Core when stacked for QRO? #hamradio #antenna
12:05
Which end fed half wave transformer should you use for running high power? #hamradio #antenna
15:31
Smarter Than Your Average End Fed Half Wave Antenna
18:02
Quão ruins são os FAKE (tr)uSDX realmente? Vamos descobrir.....
6:48