The QRPer Board

suitable for portable operations

https://www.m0pzt.com/cobweb-aerial/

and being omnidirectional may be useful for POTA

next July

https://www.mdxc.support/jw0v/

Vlad OK2WX, will be active as jw0v from Svalbard from 14 to 23 july 2025, 160-6 m, CW/SSB/FT8. QSL via I8KHC

happy hunting

p.s.

there's a bandplan here

https://www.mdxc.support/jw0v/band-plan/

sounds like he's still selling antennas, but the website changed to

https://ko4fsz-antennas1.square.site/

then, if instead of buying you may go gor building. the notes from AA5TB may come handy

https://www.aa5tb.com/efha.html

HTH

next saturday, details here

https://www.sciencealert.com/a-giant-ho ... solar-wind

avcording to infos on their website, confirmed by several sources, STEPPIR wil cease production on next August 31 examples https://www.reddit.com/r/amateurradio/comments/1l1mayn/at_the_end_of_august_2025_steppir_will_stop/ https://www.facebook.com/story.php?story_fbid=pfbid02mziE2MrDoSoYWMDspLp5qrCn...

You're right Mike, the advantage of AA5TB approach is that it could be used for a vertical (aluminium) antenna and it will ease "tuning" for the fundamental

yes all metric numbers just calc them as they are and convert them at end

And one which may fit portable operations ,(SOTA/POTA/...)

I'm referring to the ideas by AA5TB found here

https://www.aa5tb.com/efha.html

which are really good (notice the "tuned" 49:1)

boom and mast don't influence the radiation pattern so they can be conductive; a way to make the "JJ" portable is to mske it foldable; let's start from.the drawing and change it so that the reflector arms can telescope and may be unlocked and fold toward the antenna front (along the boom) ...

Welcome to the QRPer forum pick a seat and enjoy your stay; a question; you wrote about rig, but rig won't work without an antenna, which antennas do you use/prefer ?