I have had the old Wineguard antenna head and amplifier for quite a few years. A couple of years ago, I added the new (at the time) Wingman to the antenna which improved reception somewhat.
Late last year, I added the Sensar Pro amplifier which made it easier to aim the antenna correctly.
This year I added a new SensarIV antenna replacement head and am now equiped with the latest technology in RV antennas. This new head, combined with the Sensar Pro amplifier allows an easy way to aim the antenna to get the best reception. It draws in distant stations well and just takes a minute or less to get the antenna aimed for the station I want. I highly recommend it to anybody.:)
Barney