He says in the article that you need 70-80ft for HF, 6 ft for VHF and 2 ft for UHF, so I would guess so.
However they do also say you can use plastic tubing with it, so I guess carrying around 6ft wouldn't be hard, though how practical that would be in rough conditions is questionable.
However they do also say you can use plastic tubing with it, so I guess carrying around 6ft wouldn't be hard, though how practical that would be in rough conditions is questionable.