I have a resonant half wave dipole which is one continuous length and not separated in the middle, fed using a gamma match, and with the braid of the coax joined to the exact electrical center of the dipole.

Hoe does this gamma match arrangement act as a balun ?

Does AC current flow back down the outside of the coax if i don't use an rf choke ?

I have a resonant half wave dipole which is one continuous length and not separated in the middle, fed using a gamma match, and with the braid of the coax joined to the exact electrical center of the dipole.

How does this gamma match arrangement act as a balun ?

Does AC current flow back down the outside of the coax if i don't use an rf choke ?