Easy chage out Takes about 5-mins and most of that time is used climbing on top haha...
It will connect to the crank up arms with existing connections...
The 12VDC coming up the RG cable will work just fine with the JACK...
You will not have to use the 120V xfmr adapter that comes with the jack...
google image
Note the direction to point this JACK antenna to the local town with HDTV would be to the right of this photo...
I really didnt have much difference on my setup but I did notice the JACK has to be more precisly pointed at the transmitter station. I only had it up for a one trip checking it out. I use it at home for a 'CLEAR TV' Antenna.
My BATWING Antenna lloked like this model with the small dipoles added...
google image
If your batwing does NOT have those add-on dipoles shown above then the KING JACK will be a hugh performance over your batwing antenna.
This is how it worked for me at any rate...
Roy Ken