it would be use on 2meters 440 and 220
A J-pole is generally NOT a good choice for a multi-band antenna because the matching
stub should be 1/4 wavelength, and that only happens on one band. Sometimes you can
manage 440 MHz on a 2m version because it can work with a 3/4 stub, though the tap
point will be a compromise between the two. But adding 220 isn't particularly practical
unless you have some way to adjust the stub length remotely.
A discone or some sort of biconical arrangement, or a ground plane with separate
elements for each band, is probably a more practical approach to cover those bands.