Channel Master LTE/5G Filter – Reduces Pixelation & Signal Issues from LTE, 4G, 5G Interference, Indoor/Outdoor Use, Built-in O-Ring for Weather Protection, Enhances OTA Digital HDTV Signal Quality

Well, a short introduction is in order. I used to faithfully review every purchase I made with Amazon, and that number is ample, but after I gave one unnamed product a negative review because it was a total piece of junk, that review was removed by Amazon. There was no swearing or bad language in my review and I did not violate any of Amazon's rules with that review, but it was still removed, which, in my mind, it was removed because it was a negative review of a product sold by Amazon. Thus, no more reviews on any products were written by me. Why should I waste my time giving any reviews if the negative ones would be potentially deleted. I purchased this Channel Master LTE Filter and it's operation was so successful, my wife talked me into giving it a review. I have an old outside antenna on my roof that worked to receive all my local channels until a heavy wet snow storm damaged some of the wings on that antenna. A repair was made and reception was restored. I might add, getting to this roof antenna was a really big pain and very dangerous because it is mounted 32' above the ground and hanging out over the edge of the roof line. Any fall from this height would be life changing if not result in death. I do not wish to ever get back up on the roof to work on this antenna again. One local channel stated to be troublesome and eventually was impossible to view because of interruption of the 'over the air' signal. All other local channels were not interrupted. After trying an inline signal booster with no improvement, I reluctantly decided to buy a very expensive CM roof antenna. During my search for a replacement antenna, I came across this Channel Master (CM) LTE Filter and decided to give it a try before purchasing a new antenna and having to go through the major trouble of installing it onto my very high and dangerous roof. Amazon shipped my order which I received in a few days. The install took less than three minutes and that included reading the directions. To my surprise, all my local channels were perfectly clear, including the favorite channel that previous to the install of this device, I could no longer view. This filter is a 'magic' little device which solved my reception problems. I recommend the purchase of this filter if you are receiving intermittent signal over your roof antenna. Great product from a good company. Hopefully this review, in its entirety, will be posted. Sincerely, a happy customer.

I've had this for over a year. When I tell you this filter enhanced my picture quality, believe it! I almost never get any interference at all. Great product!

This filter does exactly what it's supposed to do. The trick is determining whether you need one to solve any reception problems you're having. In the US, frequencies above 608 MHz (UHF channel 36) are now used for services other than broadcast TV, but your TV antenna still receives them. If strong enough, these signals can overload antenna amplifiers or TV tuners, making your reception even worse. So this filter removes those higher-frequency, non-TV signals from your antenna cabling, preventing such overload and the reception problems it can cause. This could be a problem if you have an LTE or 5G tower within a block or two of your home. If the nearest such tower is farther from your home than that, you probably won't experience any interference from cell towers, and won't need this filter. Another use of this filter is to use an RF modulator to add your own TV channels to your home's antenna cabling on those higher frequencies. The filter will both keep LTE/5G signals from degrading your in-home TV channels, and also keep those in-home TV channels from reaching your TV antenna and being broadcast (which could cause interference to nearby cell phones and would be illegal). By the way, don't worry if your TV already has channel numbers above 36. Nowadays, the channel number you see on your TV is usually different from the channel it's broadcast on! So, if you're getting higher-numbered channels by antenna, they are broadcast at lower frequencies now, and this filter won't remove them or interfere with your ability to receive them (except the filter will slightly reduce the strength of any TV station broadcasting on UHF channels 34-36, so it could interfere with a weak TV station there.)

I had at least one digital channel that was dropping out. First audio, then the entire picture. Fortunately, that local station had a form on its website to fill out for technical support questions. They responded in less than 24 hours, and recommended this particular filter. I'm happy to say it solved my issue, and the station comes in without any drops in audio or video reception. My particular installation is on a television that is hooked up to a central OTA antenna in my attic, and we are only between 8 and 9 miles from the transmitter tower. Four other TVs in the house did not have this issue, but this one did. I'm betting it's because the coaxial cable goes through an exterior wall that faces in the direction of a LTE cellular tower that is about .7 miles away. Since all other TVs in the house received the channel just fine, I hooked the Channel Master filter up to the back of my problem TV. I had to put a 6-inch coax directly on the TV connector because the filter was too wide to fit directly onto the TV. All in all, this thing works great, and I'd recommend it to anyone having digital channel reception problems.

For those who don't know what this product is about, a quick (simplified) summary of major changes to Over-the-Air Television in the United States. UHF TV reception in the US originally consisted of channels 14 to 83 (460 to 890 MHz) introduced through FCC regulation in 4/11/1952. The 800 MHz portion (channels 70 to 83) of the UHF TV band were reallocated already back in 1983 for other services (including but not exclusively to mobile telephone service). Effective 6/12/2010 (immediately following the Analog to Digital TV conversion) the 700 MHz portion of the UHF TV band (channels 52 to 69) were auctioned off by the FCC of which AT&T (band 12, 699 to 746 MHz) and Verizon (band 13, 746 to 787 MHz) were the major winners. Since then the FCC conducted a "repack" requiring TV broadcasters to move from upper UHF channels to lower UHF channels or back to VHF (were many stations were broadcasting prior to the Analog to Digital TV conversion), including to the low-VHF band that was originally deemed unsuitable for digital television. In 2017 the FCC then auctioned off the 600 MHz portion of the UHF TV band (channels 38 to 51) of which T-Mobile was a significant winner (band n71, 617 to 698 MHz). TV broadcasters had until June 2020 to complete their relocation and to free up the 600 MHz spectrum. TV channel 37 has been and continues to be a reserved channel for radio astronomy which means that the usable UHF TV band has shrunk to channels 14 to 36 (460 to 608 MHz). All of the above refers to the actual RF channels on which your local stations really transmit (which has absolutely nothing to do with the channel numbers your TV will display). Depending on how old your TV tuner is, it will be designed to receive signals from the 600, 700 and possibly (so less likely) 800 MHz ranges which no longer contain any TV programming. The mostly mobile phone transmissions on those bands can interfere with the TV programming you are actually interested in. To prevent nearby cell towers and even your own cellphones from interfering with your TV reception, a number of companies make filters to block the unwanted signals from getting into your TV. This product (ChannelMaster CM-3201) is one of those products. It was twice as expensive as a similar product sold under the Philips brand name (SDM1520/27 also here at Amazon) which I also purchased. Needless to say, I was curious whether or not the higher price of the CM-3201 was worth it and I wanted to rely on science instead of subjective testing (e.g. how many times a particular channel pixelates within an hour). I therefore used a NanoVNA-H4 to measure the filter characteristics. I'll state upfront that using test equipment for 50 Ohm impedance with 75 Ohm impedance filters does introduce some errors into the measurements, however since this is the same impedance mismatch in both cases it still results in a valid comparison. An ideal (impossible) filter would have no attenuation below the cut-off frequency and infinity attenuation for any frequency above it (meaning that there would be no transition band at all). Real filters reveal their quality by how much they attenuate unwanted signals and how wide the transition range is (the frequencies between start of attenuation and full attenuation). Both filters showed a start of attenuation at 606 MHz (first visible sign of attenuation in the LogMag trace, not the 3dB attenuation commonly used to characterize filters) which is still within the frequency range for TV channel 36 (I subsequently tested the filters on a local station that uses RF channel 36 and the reception was fine). Also both filters showed reasonably low figures for insertion loss (the attenuation of a good signal just because the filter is being added). The CM-3201 (this product) showed a transition band of 36 MHz (less is better) and attenuation of almost 60dB (more is better, but 60dB is already excellent). The SDM1520/27 showed a transition band of 72 MHz (a bit disappointing that it is so wide) and attenuation of about 30dB (good, but higher would be better). In-line filters are often symmetrical and can be used in either direction. Both the CM-3201 and the SDM1520/27 have explicit input and output markings but I did not test whether the filters behave any different when used backwards. The ChannelMaster CM-3201 is significantly larger in diameter which may be a problem on some TVs with recessed antenna connectors (it wasn't a problem for me, I connected it to the input of the antenna amplifier which is the recommended place). Bottom line, this filter does work and it is much better than the half price competition. Not everybody may need these filters and of those who do, some may get satisfactory results from the cheaper filter. That said, why settle for less when the better product is still affordably priced ? However beware of any filters that are still sold which are based on the 2010 elimination of the 700 MHz band since those are not blocking cell transmissions in the 600 MHz range (those older filters are useless, regardless of price).

This filter actually apparently made my broadcast TV reception worse after I installed it...but I don't intend to return it, and I assume it works as it is sort of advertised. I seemed to have better reception using the earlier Channel Master 4G/LTE filter, and at this point I have no particular reason to think that this 5G/LTE filter does not work. The thing is, this is a technical product, and can only have a beneficial effect if you are experiencing 5G/LTE interference, and you may not be. But this could change as more 5G frequency cell towers are installed. How do you know that you are experiencing 5G interference? You don't, at least not without a spectrum analyzer and several days/weeks of investigation as the power through cell towers is variable depending on usage. In some cases, I believe the power to the towers is so high that even this passive line filter won't work, other times, you just don't need it, and it reduces your TV signal strength due to insertion loss. The bottom line is that there is so much TV reception interference out there from all causes it is getting almost impossible to watch broadcast TV anymore (this has been my case). So to hang on the dream of "free" broadcast TV I use and keep a collection of various line filters, including high-pass impact interference and FM traps, and so forth. So I'm keeping this as part of my collection.

This is a "must have" if you have your TV hooked up to an antenna. I was having a lot of problems with signal reception and after I installed this, all of the problems cleared up. No more signal pixelation. IF you are having trouble, I absolutely recommend you try this filter.

This is supposed to filter out 4G LTE & 5G cell signals that can interfere with UHF ATSC 1.0/3.0 channels. My setup is as follows: 1. In my attic I have an Antennas Direct ClearStream 4 (UHF only). 2. I verified with the factory that from my location most of the broadcast towers are at a compass heading of 95 degrees and pointed the Antenna at this azimuth. As the crow flies the towers are only 35 mi. from my house and the ground is mostly flat between. 3. I have high quality RG6 Quad Shield 3Ghz cable from the Antenna to my basements, then a RG6 coupler to another cable (same specs) that runs from the basement to the wall outlet in the living room. There are No splitters and only 2 couplers, so I'm only losing 2db signal Gain at the most. 4. From the living room wall outlet another RG6 cable (same specs) to the Tablo 4th Gen 4 Tuner gateway. According to the Channel Master instructions this should go to the Splitter input or the TV input. For my setup this is going directly to the Tablo input. Before installing this filter, my weakest OTA channels were 2 PBS stations and one other that were weak and grainy, but could still watch without lag or buffering. After installing this filter they were worse with a lot of lag, buffering, and freezing. The Tablo settings has a built-in amplifier if the Antenna does not have one. I have the Tablo amplifier turned On since my antenna has none. Now these channels are unwatchable. I removed this filter and everything is better again. I guess it depends on your location and situation. It may or may not help improve your channel reception. For me it did not work well.

diminution du signal antenne, de plus pour renvoyer cet article pas évident j'ai perdu 49€

I have an inexpensive outdoor UHF antenna near the roof of my house, with a Channel Master distribution amplifier. I've had decent luck with getting channels, but still had a few that wouldn't come in. I recently have had strong local channels that were registering 55-60% in strength but were still dropping. Read about the LTE interference and tried it. It worked! Restored all my channels I used to watch on a huge old school antenna with a small cheap setup. Very happy. This product will not work for everyone, as there can be many factors involved in getting a clean and strong signal from broadcast towers. Keep that in mind when you try it. If you have a weak signal in the first place and plug this in, you may be disappointed. LTE interference is real, especially since the frequency repack where the TV stations are changing frequencies for LTE expansion.

Superó mis expectativas de hecho le dábamos poca credibilidad y vaya que demostró mejorar la calidad con que se recibe la señal 📶 ayudado del amplificador de TV 📺 ha dado un resultado que captamos más canales y con mayor intensidad y mejor respuesta al sintonizar los es un hecho que la imagen se ve mucho mejor gracias 👏

Used with an indoor antenna without amp or preamp. I did not expect this device to add several channels but rather, to improve existing ones. On the contrary, some of the existing channels started to pixelate or showing : No signal. Save your money.

Excelente producto. Se puede ver mejor la TV.