Question is what is best 900MHz Omni antenna.
Hands down, MTI MT-243003/NH
Omnidirectional Slotted Array, 11.5dBi
Horizontal Polarization
77"x12"x2" at 25+ pounds
Comes with mounting plate fixture. Advise torquing every bolt to max. Only had one antenna bend over due to very large wind load in bad storm on a day we had tornados in area. That was one too many, but the thick steel plate looked pretty comical crinkled like tin foil

, after I replaced the mount and could actually laugh at the situation. Fortunately it was in the middle of a roof, and it just broke my stuff.
Yes, its has a high purchase cost, but in long run, not actually expensive and worth every dollar. Uses sophisticated broadcast technology. Will outperform any of above mentioned wannabe antennas. Physics should tell you it must be at least this big to get out like a ton of bricks (really). Tested higher cost Antel 900MHz 12ft vertical pol heavy duty high power commercial antenna against this. Horizontal pol is no doubt better in crowded RF environments, but also installed it 100 miles outside of urban area on a 180 ft modern water tower with about a 35ft diameter tank (very large base). Had to fabricate unistrut mount, 1/2" hardened stainless bolts, very large beam clamps, if you dont want to see it on the ground again. Just drove past this install last week a year after installing it, and it isnt leaning a bit! This antenna was tested against the Antel it replaced at 5+ miles line-of-sight. For whatever reason, signals at CPE with same yagi changed to horizontal pol were 20dBm louder. Hard to believe, but saw it myself. Possible that RF conditions at CPE in small town had some other RF in band, but SNR made radio work at max bitrate. Typically could get 12-15 mile range, never totally line-of-sight. Through medium density piney woods, 7 miles possible with signals peaking about -69 to -66dBm. Achieved this performance with about 50 customers off water tower AP. Granted, water towers are at the top of the terrain, but the empirical evidence proves that this antenna will pay for itself easily in revenue, thats why I dont think its expensive. More expensive when unable to install willing customers. Just make sure you have a gorilla torque those bolts.
You get what you pay for. Have installed several of these monsters and every one of them exhibits drastically improved performance over any other antenna. Not only that, it is a sight to behold when you see that odd looking 'plank' of antenna on a water tower, or roof of a tall building. No one can figure out what that thing is
