Engineering challenges of the completed QRP EFHW coupler

Kudos to Kits and Parts, the United States Postal Service and the Canada Post dog sled teams who fearlessly fought their way through blizzards on the frozen barren tundra into the wild white yonder to safely deliver my package of toroid cores. But, as soon as I had unpacked the goodies I realized I may … Continue reading Engineering challenges of the completed QRP EFHW coupler →

Matching an EFHW antenna – a third way

There is no doubt about the popularity of the End-Fed Half-Wave antenna. It is used by a very large number of hams, especially during portable operations like POTA, SOTA, WWFF etc. Why is it so popular? The principal reason seems to be ease of deployment. The EFHW requires only a single support and can even … Continue reading Matching an EFHW antenna – a third way →

Is an EFHW Antenna Truly Multiband?

A fierce debate rages on one of the online forums I read. Is an End-Fed Half-Wave (EFHW) truly a multiband antenna? By "multiband" I mean resonant on even harmonics without a tuner. The most vocal posters in that forum keenly disparage these popular antennas despite their popularity. Resonant on every band, earn DXCC in a … Continue reading Is an EFHW Antenna Truly Multiband? →