Directional UltraHorn™ Antenna with TwistPort Connector

The horn and its twistport companion are very well packaged and arrived without a scratch. The system is very easy to set up In theory (see YouTube videos) with a minor wrinkle.The mast mount is supposed to be good for masts outer diameters (OD) ranging from 30-80mm (ie 1.25-3” - see the attached spec sheet) yet the bolts shipped with mine were not fully threaded and hence the smallest mast OD my mount could handle was more like 50mm or 2". If you want to mount this antenna to a standard 1.5" TV mast, you'll need a stainless flanged hex-head bolt (M8 with a standard metric 1.25 pitch) that is fully threaded. I got my set of four from a metric bolt shop in northern MA for about $13 delivered.I wish customers had the option of buying a "longer" mast mount as the included one limits the pivoting range of the Ultrahorn unless you mount it to a freestanding pole without nearby obstructions. I will likely have to buy a new set of mast mounts to give my rig greater clearance to the adjacent chimney.The improvement of this antenna over the RocketDish I previously used (a 30dbi, 620mm RD-5G30-LW) was unexpected. Note the radio is the same (RP-5AC-Gen2-US) and that the environmental conditions favored the Rocketdish (whose connection was measured in winter with no foliage, low humidity) while the Ultrahorn was measured in summer with some foliage to burn through and much higher humidity. Yet despite these handicaps, I measured over 5db improvement for noise *and* signal strength vs the 620mm Rocketdish with the optional isolating radome. Per the spec sheets, the difference should have been the other way around.For emphasis: a 5dbi signal difference means that 5x the signal is making it into your receiver, combined with 5x less noise. That in turn allows higher transmission rates, fewer dropped packets, and so on. The 5dbi noise reduction alone is a key reason to buy this antenna for use in any "noisy environment" use case. For example, this is a great antenna for PtP WISP backhaul connections where lots of antennas are competing for space on a mast, mountain, building roof, etc. and interference is the order of the day. Being able to choose among many radios thanks to the TwistPort connector is a further plus for WISP operators.Yes, this antenna is much more expensive than a circular dish like the RD-5G30-LW, but if you need a great signal and lots of noise rejection, this is the antenna to buy. Good news also that the $59 TPA-PAF twist-port adapter was perfect to hold my existing UBNT RP-5AC-Gen2-US access point radio. Thus, my only "loss" is the actual UBNT antenna, Isobeam cover, and precision alignment kit. The stuff is perfectly useable so I'm sure I can find a taker.