Bill-san,
The carbon rod has more resistance than aluminum. But the merits are cheaper and longer but easy to set up when POTA.
If you also search on YouTube, you¡¯ll find many videos regarding the carbon rod antenna.
I suppose that JJ1XTG, SOCHO-san (a member of A1CLUB) is an enthusiastic fan of the carbon rod antenna. He calls it WWR antenna, Win Win Rod. Don¡¯t know the reason. hihi
// HIRO, JJ1FXF
HIRO, JJ1FXF