Can the 5/8 wave antenna be matched with a tuning stub such as the
J-Pole uses?


--
73 for now
Buck
N4PGW

Yes, A 5/8 radiator with an input Z of 80-j300 with series 19cm of 450
ohm line will be about 55-j0 ohms. Of course all of this is highly
dependent on the antenna environment on 2m.
Gary N4AST