Don't expect it to bring in distant or difficult stations.  The four element directional Yagi blows this away for the same price
931685
I purchased this HD-6010 to pick up my favorite NPR stations, and it didn't work even as well as a simple Mogami copper dipole antenna.  If you want to purchase an antenna that WILL make a difference, I recommend the 4 element Yagi directional antenna that is available for the same price.
3235718
It's very big which makes it hard to handle. I live about 50 miles from Philadelphia and 50 miles from Baltimore. I get stations from both, just not the UHF that well. I expected it to do better. It is mounted about 8 feet above the roof on a rotor.
1360481
I live in an area about 60 miles from the transmitter.  I tried a friends antenna,  (Xtreme Signal Long Range Yagi Style VHF/UHF HDTV Antenna (HDB91X) and got 36 stations.  With this MUCH smaller antenna I got 37 stations.  It was very easy to mount because I just took off the dish antenna from my rood and used the mount from the dish to put this one up.  I also just used the coax from the dish to run the signal into my house.  I am really impressed with how well this worked for me.
421125
I have an old RCA amplified antenna and didn't think anything could match it. This did. It's just about as good. It's just very directional. Believe it or not, for best reception for an antenna 48 miles away (antenna location as measured by google earth from the antenna to my house, not distance to the city of the station, that's well over 70) I lay it on its back, flat on the reflector, aimed at the known direction of the antenna and it works!!! Just know that you MUST pull off the clear plastic on the transparent reflector thing that you snap into the black pieces. It's hard to tell that it's on there but it is. Get it off so it will work better!
4878550
So far I have picked up the same stations as before but I have mounted this on a pole on the roof of my home. The results are more consistent picture. I did have to look up where the local broadcast antenna's were to fine tune the aim. I am ordering another to direct toward different antenna's to see if I can pick up different channel's. I will use a combiner but I have not used a signal amplifier. Those never seem to work for me. Simple to put together. Be gentle this is soft metal.
37950
I just received this antenna today and mounted it in the attic (at least 15 feet in elevation) where I had a temporary antenna that was pulling in 31 stations (4 of them weren't usable).  I was able to pull in 5 more stations with a few that weren't usable or on the fringe of the signal level.  I'm running a small 20db amp (1byone also from Amazon at around $14) and what I am getting looks great.  I am very pleased with this product.  It's fairly flimsy so assemble with care and put it where it has no chance of getting bumped into.  I'm about 42 miles from the farthest station in my area all to the southwest about 230 degrees.  Use http://antennaweb.org/Address.aspx to find out where your stations are.
4303946
This unit has a small profile and I had no problem getting it in my attic. I am 40 miles from my area's broadcast antennas towers. I do not need to use the motor to turn the unit so I can not speak on that. All of my signal strength is strong.
428275
Works amazingly well for what it is. I bought this for my shop after originally installing a larger similar booster for my home from my service provider.  In our rural location cell service is iffy at best.  This unit was installed using the supplied antennae on an outdoor mount.  I just used 1" EMT electrical conduit as a mast at 15' above the ground.  I built a brace to hold it against a small outbuilding attached to my main shop.  I just guessed on the antennae's orientation based on my home boosters direction.  Since this is a directional antennae and not omni-directional, knowing where the cell tower is, is a must. I wasn't sure how much cable was supplied and it turns out you get 2 rolls of about 25'-30' each. I bought an additional 50' roll, but it turned out I didn't need it.  If I did need it, it would take adapters to connect to the supplied cable.

The units install easily by attaching the cables where indicated.  After turning my cell phone "OFF" I just plugged the cell booster in to power and WHAM, I immediately upon turning my cell phone back on I had 3-4 bars and 4G in an area with NO bars and NO "G".  It actually gets better reception than my big expensive service provided one does at the house.
The negatives are that it has limited range, probably due to this being the runt of the litter of WEBOOST.  I can walk out a door 10' from the antennae and drop a call. As long as I stay inside my shop I can talk on the phone. Going out a door is a call dropper.
I will fine tune the direction of this antennae and see if it helps even more.
Another issue is that the indoor antennae only has a short cord (about 6'), limiting it's placement from the main inside boost box.  It also uses a different size cable from the outdoor antennae.
The written installation manual was rather lame. It refers to you going online for better instructions. Not a good thing if you're a long way from internet service while installing.
For what this costs, it certainly was an inexpensive option compared to what some of these things cost and worth it.
2260447
When I picked this thing up I thought, "No way this thing will do anything worthwhile!" I was wrong! When used with the Little RCA ANT751 Antenna this thing brought in 12 more stations, from 20 to 48 miles away.
4010471
This product matched with a 14db directional antenna worked well for bridging a building to another.  The interface is simple and straightforward enough that I had it setup in 5 minutes.  The only thing I would change is to give it more power.  I believe it's only around 14dbm transmit.  That being said, I had no problems using it with my configuration.
4717223
I bought many more antennas than I would care to admit, so I did not expect much. But this is by far the best of the lot. I like at the base of East Rock in New Haven, so it's hard to get a signal of anything north of here. But I am pulling in a lot of stations. If you buy one, take the time to try various angles. A little change can make a big difference.
2134698
I'm writing this review after only one day of use, so take it with a grain of salt. As a cord-cutter, I have been looking for a solid antennae to pick up local stations. I came across this the other day and figured I would give it a shot based on the positive reviews and the background of the company that makes them.

Background info: I am located in Fort Wayne, IN(very flat terrain) and I have this unit taped to the window next to my TV. According to Mohu's website, I should pick up 21 channels, with this model.

Pros:

This thing so light, that a single piece of scotch tape is all I need to keep it attached to my window.

It seems like it was built with quality material, but I wouldn't attempt to use it outdoors (this will void the warranty).

Picks up 19 channels. 18 of them come in crystal clear...and the HD channels are immaculate.

Cons:

Missing some of the promised channels, but they are all TCT (a christian television network). This isn't really a con, considering I wouldn't watch those channels if you paid me. Maybe I should have listen this as a pro.

Hmmm....guess that's about it as far as cons go, but time will tell.

I will be moving to a different part of town and will possibly be tying this into the cabling system that is already ran through the house. We'll see how it handles being split and ran to two different rooms without an amplifier. I will post my results, both pre-amp and post-amp setup once I have them.

One last note: I bought the refurbed version.
3114520
I doubt there are many places where this can be used successfully with a nice stable signal. I live in Ft Myers....we have  a dozen FM stations and we do not live near any major metropolitan area.....I could not find a clear frequency. Another item for My favorite Hospice charity store.
3506359
As others have noted, Amazon has ratings for different products (amp, antenna, etc) all scrambled together here.  I purchased the HD8200U and the amp so will discuss both.

After trying all of the various miracle (new style and electronic) antennas, I was getting best result with a small RCA Yagi.  Still, havinh a mix of UHF and VHF at both hi and low frequencies, I was not satisfied with channels like PBS-12 out of Phila (a notoriously difficult channel to grab).  the small yagi worked well in the winter but as trees started blooming, it was pixelating.  I then ordered the HD8200U.

This antenna is HUGE.  You will definitely want some help mounting it.  However, once up, it will lock signal like a champ.  Every channel in my area now comes in crystal clear (something like 64 total although many are worthless).  I do not have a rotator but was experimenting and can pull in signals from PHL, Wimlmington, Allentown, and NJ.  It is very directional, so you will want a rotator if you are interested in pulling signal from different directions.

Yagi style antennas like this have been around for a long time for good reason, they work well.  Don't waste your money falling for the hype of miracle antennas.  If you are close to the signal, get a small RCA yagi.  If you are further out, this is the antenna to have.

Now, onto the amp (I wrote what follows earlier when I had the smaller RCA but am still using it with the HD8200U).

===========
Used this with a small Yagi antenna where I had some very long cable runs (150+ ft).  Works really well with no significant noise.

It is important to note that like any amplifier, this will not magically improve a weak signal at the actual antenna.  It simply boosts the signal after the antenna picks it up.  I only installed the amp after I had properly installed and pointed my antenna.  If you do not need an amp, you will generally get better results without one.

In my case, television #1 worked great without an amp.  Television #2 uses an additional 75' of cable and was having trouble locking some of the weaker VHF stations without pixelating.  Adding this amp fixed the problem on TV #2 but did not introduce noise which could potentially degrade other channels.
1817192
Acquired this for remote antenna set-up. Picks up channels 53 miles out (not much obstruction). Closer channels (29 miles out) are obstructed by trees and hilly terrain and when pointed in that direction several channels come in pretty good, but not all. Installed on elevated 20-ft mast. Overall happy. Acquired HD 4228 also (reported 75 mile plus range) trying to pick up Fox, which was intermittent with HD 4221, but that didn't help. I installed LN-200 in-line pre-amp also. (Would recommend Channel Master 7777, higher gain next time.) My advice is to acquire the cheaper of the the two, you'll save money (about half) with no recognizable upward benefit for the more expensive antenna.
4336113
Edited Feb 2015:
Upgraded the rating to satisfy PC police comment to original post.  This antenna has a 42 degree beam and is bi-directional.  Simply stated, you can get by without a antenna rotator.  But you will still need a signal preamp with this antenna if 20 miles or more from towers.  And if your favorite stations are 90 degrees apart, then will need a rotator or a second antenna mounted perpendicular (my solution). Very similar performance as with my old Channel Master 4228.

Original:
Amazon sent wrong antenna.  It was HD-9095 yagi antenna, very directional and not at all what I wanted.  If I used a rotator then maybe better.

I had previously ordered the HD-8800 for my daughter was shocked how well it seem to perform.  She's 25 miles plus some from transmitter towers.  Hillsborough, NC area.  I had expect to get 5 or more stations.  When we autotuned her panasonic picked 15 stations or more.  No signal amp.  {later added because of pixelation drop-outs]  Amazing.

The 8800 is at least bi-directional and has a wide beam width.  That's why I prefer over the yagi design.  Amazon offered to send me the HD-8800 but by then I had changed my mind.  Still might buy in the future.
3442327
I was skeptical reading the great reviews that said this device was almost magical but I will admit that it really is.  I have not mounted this on a permanent mount as I am still tweaking height and location to keep the wife happy.  We tried several indoor boosted antennas without any luck, we might get two or three channels (we are 32.6 miles from the broadcast antenna straight line and flat geography). Currently we get all channels that are available and even a few from a town way north that I wouldn't not assume we could pick up.  The majority of them are either 720 or 1080 quality and everyone that comes over when the news or sports are on is amazed to hear that we're on an antenna and not cable.

I am currently using the included booster which is only 100mA.  The problem with this is that I split the signal from the booster 4 ways which makes for a significant signal drop (again we are only 32ish miles from the broadcast antenna those in more rural or mountainous areas may need a stronger booster).  I tired a Motorola signal booster but it was DOA so I need to keep looking for an acceptable replacement.

If you are like us and looking to cut the cord from cable this combined with a Fire TV will cure any blues you may have.