Thanks for the info on Sensar power converter.
I used the Jack in the same spot I had used the Sensar and found ZERO difference between the two. The Jack was no better or worse than the Sensar (without the external Yagi).
When I have the TT close to the TV stations the antenna works great. So did the Jack. I think most of the antennas will work great if you are not to far away.
There are some good antennas that work at long distances but generally do so by being directional. In other words there is no free lunch.
On the LEDs they vary. The factory LEDs I have in my Grand Design had no impact on the antenna.
When I had my old Puma I bought cheap LEDs. One or two of those LEDs if you turned them on the Jack antenna quick working. When I turned them off the antenna started working. My guess is the LEDs were generating a huge amount of noise. I had my TT in fringe area. Possibly if I were closer the signal/noise ratio may have been adequate.
Short story if your antenna quits working turn off the LEDs and see if they are related to your reception problems.