Channel Master Ultra Mini 4 - 4-Port TV Antenna Distribution Amplifier, 8dB gain, Compatible with Non-Amplified TV Antennas, Cable TV and Internet Modems, Increases Signal Strength, Indoor/Outdoor

I have an antenna that’s been up for a little over a year now. It’s on the garage with a 100 foot coax that goes into an amplifier and filter, which then goes into a Tablo device for Wi-Fi streaming. Over the winter, one station that is far from us, but we watch often became unwatchable. I bought this and put it in line on the tablet side of the coax, thinking it might boost it up, but it did not. Once the weather warmed up a bit, I repositioned the antenna to get the best signal possible without any amplification. Then I hooked up this amp at the antenna and was amazed at its capability. So, with the antenna followed by this amplifier, then across 100 feet of coax to another amplifier and filter, the TV signal is flawless.

Quality device. Coupled with a rooftop antenna I receive 30+ unfiltered, crystal clear channels. This is really a great piece of equipment.

This device is nice and heavy, with screw holes that let you bolt it to something. The screw holes are too small to accommodate standard drywall screws, which is kind of dumb. I have it screwed to a 2x4 in my attic, which is where the HDTV antenna is.The power cord is only 6 ft. long, so look at your setup before you decide. The power cord APPEARS to be just a length of coax, but I sure couldn't swear to it -- I dunno whether one could substitute a longer cable. So I ended up wiring an AC outlet in my attic right near the antenna. But if the cable you want to amplify comes in the house right near an existing AC outlet (hardly a rare setup), this thing will install really, really fast.When I was shopping, it took me a long time to figure out what kind of amplification I was looking for. This device seems to be designed to solve the problems of people who get good reception, but have to overcome splitters or long cable runs; it does NOT appear to be for those trying to compensate for poor reception.I had great HDTV reception, pulling in over 100 DTV channels locally. But there wasn't enough signal to make it to both of my TVs, each of which was at the end of at least 100 ft. of coax cable. Either TV connected directly to the antenna by itself was fine. Both TVs at once was pure death.There appears to be a lot of variation in people's situations with DTV, so it's hard for a reviewer to generalize. But if you have a well-situated AC outlet, and are trying to solve the problem of multiple TVs on long runs of cable, this appears to be a very good option at an easily affordable price.

Excellent! Channel Master is great. All of my cable products work. MoCa and cable modem work great. Nice and bright LED so one can tell it has power. Very nice product. TVs are clear and clean.

The Channel Master CM-3410 signal distribution amplifier worked very effectively with my television sets. My home is only about 12 miles from most local TV transmitters, but reception had been problematic because we employ indoor antennas some distance away from our TV sets. Most challenging was a basement TV fed from an antenna by a window at the other end of the room. Only a few channels came in reliably on this TV. Reception on our upstairs TV, also relying on an antenna in a window, was better. For both sets, frequent antenna adjustments were necessary to obtain satisfactory reception. And human movement in a room could cause some images to become pixilated or disappear.The labeling of the terminals on this amplifier can be confusing, because it is tiny and nearly illegible, and its terms may seem ambiguous. (1) On one side of the amplifier is a single terminal, labeled "PWR IN / RF OUT +15db." A coaxial cable goes from this terminal to the TV. (2) Directly opposite this is another terminal, labeled "PWR IN / 12-16VDC 250 mA." A coaxial cable connects this terminal with the DC power converter, which plugs into a regular AC outlet. (3) Next to the power terminal is a third terminal, labeled "RF IN / REV OUT -1dB." For off-air reception, the coaxial cable from the antenna attaches to this terminal. The amplifier comes with a 6-foot coaxial cable to connect the DC power converter to the amplifier. You will need separate coaxial cables to connect the amplifier to the antenna and to the TV. The lengths of the cables needed will vary according to the locations of the antenna, the DC power converter, and the TV. In general, it is best to keep the amplifier as near as possible to the antenna. Just keep in mind that you will need three separate F-Pin to F-Pin coaxial cables, only one of which is included with the amplifier.Both of my TVs are served with RCA digital flat multi-directional antennas, whose built-in 6-foot cables attach to the amplifiers. The basement amplifier is connected to the TV with a 20-foot cable; but only a 6-foot cable was required to connect the other amplifier with the upstairs TV. These antennas did not work very well with 10db gain amplifiers. But with the 15db gain CM-3410 amplifier, the basement TV pulled in all the desired stations--mostly without any adjustment of the antenna. The results were so good that I acquired a second amplifier for the upstairs TV, and it solved nearly all the problems we had been having with it.The effectiveness of this amplifier will depend on your specific situation. (See other reviews.) It may not help to pull in a distant signal via an indoor antenna. But if you are getting poor reception of certain stations, this amplifier may be the solution.