EFHW - Endfed Halfwave Wire Antenna (Amateur Radio and CB Radio) (DIY Endfed Multiband Antenna)

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VQ Tech (DK5VQ)

Published on Mar 21, 2017
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End-fed half-wave wire antenna EFHW (end-fed multiband antenna). Multiband or monoband for amateur radio and CB radio. Here with 1:49, also works with 1:64 depending on the antenna wire. (DIY, SOTA, COTA, QRP portable) The half-wave antenna is explained in more detail here. How does it work, how do I build the balun, how do I calculate the wire length? Have fun building it and using the radio with this problem-free antenna type. The coil in the 80/40/20/15/10 version has 93 turns with 1mm² copper enamel wire on 40mm HT tube. The 40/20/10 has a coil with 47 turns on 32mm HT tube. Unfortunately, I no longer have the opportunity to build it for you at the moment...!

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