Well Gang,
I too was very interested in the Jack antenna mainly because we NEVER received anything on the Bat Wing, AT ALL!!! No matter where we were, home, camping, multiple places, it never brought any signals in. Now, a tiny bit of history. First, we've got the original Sony, 2004 (three ton version) still in the front. So, that requires the need for a "Digital converter box". Second, I've scanned multiple times, while camping and in RV parks and still received nothing.
So, I just figured the Bat wing was a POS. So, we just went out and purchased the Jack, from Camping World. We'd have got it on line but, in the end, it was only a $4.00 savings and, it would have taken 10-14 business days to get to us. No thanks, it's mounted now!
Well, super long story short, what I found out is, there was no 12V to the new Jack to boost the signal. That was because the multi-switch box had a burnt "choke" in it and that prevented the 12V injector from sending 12V to the Jack or, even the old Bat Wing.
WEll, got that fixed. But, still no 12v to the Jack. Figured that out. It appears the digital converter box will not allow the 12V to pass through the two cable connectors and, travel backwards to the antenna, up the coax cable. So, at this point, about the only way I can get the booster in the Jack to work is, use the 12V Power injector that's supplied with the Jack, in between the antenna and the digital control box. And, not use the built in power injector in the multi-switch box.
I'm about to pull the rig out from under the cover and test to see if I can now get anything. Wish me luck.
Scott