This antenna is sold as an upgrade, so let's see how it does:

Slightly more hopeful than the rubber ducky but still a bit… Flaky.

70cm is still a bit sucky… Let's focus on the HAM bands in use:

It sucks in the 2M band, perhaps 70cm is better?

Nope, SWR at 6.5 or worse. Better range, but SWR eats up all the power.