Dan Koellen AI6XG Oct 4, 2020 8 min Trapped 20/30/40 Meter EFHW Antenna An End Fed Half Wave (EFHW) antenna for operation on 20, 30 and 40 meters was built for SOTA operation. By using traps, the antenna...
Dan Koellen AI6XG Jun 6, 2020 4 min End Fed Half Wave Antennas: More About the Primary Capacitor I recently posted a blog claiming that a capacitor in the primary of the matching transformer is not needed for end fed half wave (EFHW)...
Dan Koellen AI6XG May 27, 2020 3 min End Fed Half Wave Antennas: Is a Primary Capacitor Really Needed? In my research on End Fed Half Wave (EFHW) antennas I found that nearly all have a capacitor in the primary (rig) side of the transformer....
