One application where I used a sleeve antenna was a 20 meter dipole on a charted sailboat, but why bother carrying coax when you can effective work a single band with a wire dipole. I've consistently worked DX with a dipole, one end up on a pole or tree, the other trailing to the ground. With rigs with a built in tuner like the Elecraft KX2 or Zeigu G90 a 20 meter dipole can be tuned to 20? 17 15, personal experience.
The selling point hype of the EFHW is one can work multiple bands, some not harmonically related, with one wire.
Mike N2MS
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On 03/02/2024 10:00 AM EST Brian Beezley < k6sti@... > wrote:
I hate it when I fumble a key and the message gets sent before I'm done.
It should say click on FLOWER POTS for the origin story.
I think I'd add another coil a quarter wavelength down the feedline to
suppress any residual current.
SOTA people (summits on the air) use these antennas when operating
portable on summits, most often on 2m but lately on 10m as well. They love
them.
Brian=-=-=-=-=-=-=-
