I was looking at this antenna @ https://www.ameradio.com/doc/Micom_FAD1410_brochure.pdf-. It is a commercial tuner-based all-band HF antenna. It is in use by, for example, Civil Air Patrol and other commercial and military stations. I've seen them up close, but I don't know how they really perform. Prolly pretty expensive, too! At first glance, I would think they can't work all that well. First of all, they are folded across the roof of the vehicle due their length (20'feet or more). Obviously, there is no choice due to the length of the thing. I've never been a fan of tuner-based mobile HF antennas. While a tuner/coupler can yield convenience and *some* fair performance on a base station, they fall far short in mobile operations. A mobile, first of all, is at a disadvantage from the get-go compared to the same, comparable, base station on the same frequency. It loses height, it is moving thru a changing (fluid) environment, it encounters different objects such as other vehicles and buildings. It's relation to ground changes as it encounters different soil compositions, moisture, and density. So a mobile antenna needs to be the most efficient one possible in order to overcome these obstacles. This is why the old (ugly?) Bugcatchers and screwdrivers with large center loading coils usually get the nod when it comes to performance. The screwdriver, IMHO, is the one that *I* endorse, especially since it is able to rapidly move from one frequency to another and becomes a resonant, low SWR radiator (if tuned correctly by the operator) at the frequency of choice. It also overcomes many of the obstacles mentioned well enough to make a mobile punch thru the hash with a fairly decent signal. Since a tuner/couple does NOT "tune" the whip, but merely provides a 50 ohm match and absorbs heat, the antenna system is severely handicapped when compared with other types of mobile HF antennas. So I saw this commercial "Mobat" antenna, and it's made me curious. How well DOES it work? And one that I looked at in person appeared to be installed incorrectly (?) For one thing, it was mounted on the back bumper of a van, then the whip went across the roof of the van to the right front side. It was then pulled down within 4" of the top of the van, and I thought, "This can't work". There was a metal bracket, insulated with plastic about 4" mounted on the roof, thru which the whip resided. IMHO, most of your signal is going into the ROOF of the van! Changes I would make are. 1) get rid of the metal bracket, 2) use PVC with a "T" and a base plate, and raise the whip at least 2' above the top of the truck. This would help raise the whip out of the near field and also insulate the whole business. So all you antenna gurus take a look and tell us what you think of the Mobat antenna.