There is a controversy regarding the minimum length that needs to be maintained with S/PDIF cables for optimum performance. Press question mark to learn the rest of the keyboard shortcuts. (band 144 - 146 Mhz and 430 - 440 MHz). Example. The cables commonly used for CB applications have a VF range from about .6 to .8 or there abouts. Velocity Factor = FACT: RF slows down when traveling within coaxial cable. To get started let’s cover the following topics: The different types of coaxial cable for HDTV. You can change your choices at any time by visiting Your Privacy Controls. It should be fine. The connector has good performance characteristics up to about 1GHz and is … To enable Verizon Media and our partners to process your personal data select 'I agree', or select 'Manage settings' for more information and to manage your choices. Your installer will typically apportion the cable into shorter lengths to cover the range … Get help with your Smart TV, Roku, Fire TV, Apple TV, Chromecast, and Android TV. Higher channels have more losses. 2.8 dB of loss at Channel 51). We offer advice on live streaming and on demand services, antennas, and OTA DVRs. I am not an RF engineer and I don't understand why for the same PCB antenna but with longer cable length can have better return loss and efficiency. If it is RJ59 the high frequencies lose signal more quickly so the max length is about half that of rj6. The technology has been around since the early 20th century, with these cables mainly being used to connect satellite antenna facilities to homes and businesses thanks to their durability and ease of installation. Primarily used for cable TV, HFC, set-top boxes, cable modems, the F coaxial connector is a 75Ω connector often used in conjunction with standard RG59 and RG6 75Ω coaxial cables. If you have been using heavier and rigid coax cables, you’ll be glad to discover C2G 28721 RJ11 modem cable. Thread starter AndyH747; Start date Mar 14, 2010; A. AndyH747 Active Member. Page 1 of 2 1 2 Next > Cackalacky Kid New Member. Plus I'm going to replace the roof soon anyway. I guess I should have asked - is shortening the run to 50 feet worth my time? Post #1... How to determine coaxial cable length correctly fo... 160m Short Vertical Loft Antenna-G3XBM QRP WERBSIT... New 160 Meter Antenna. Also the way to make coaxial cable works as impedance transformer & proper SWR measurement technique. Cable length ranges from 50 to 1000 feet, spooled. Post #1441. Coaxial cable, or coax (pronounced / ˈ k oʊ. Mar 14, 2010 #1 ... Coaxial Cable Specifications Anyway, the point is that the difference is negligible and you gain far more (excuse pun) by using a larger dish. How much Wi-Fi signal strength is actually lost per foot of antenna cable length? You might can boost the signal with an amplifier to make up for signal loss. Coax, or coaxial cable is a necessary component that allows for connecting between the outdoor antenna and the television. Professional coax starts at 0.91 and higher, so check the specifications of your coaxial cable from the manufacturer before cutting your segments and remember to add some extra length of the center core conductors for good cross segment connections! Learn about Sling TV, Disney+, FuboTV, DirecTV Now, YouTube TV and Philo. If it's not watchable, then add a pre-amplifier between the antenna and the 100ft coaxial cable segment to compensate for the attenuation. Coaxial cable comes in various grades like RG6, RG59, and RG11. These are 50-ohm, pro-grade coaxial cables designed for large installations from 7,500 to 50,000 square feet. Basically we can only get what signal 'bleeds' over the hill top, which means that either extremely stable weather with clear skies, or stormy and windy weather both reduce our signal strength, since much of what signal we get seems to be what bounces from cloud cover over that hill). If it is RJ6 you should easily be able to get usable signal up to 150 feet. If it is RJ59 the high frequencies lose signal more quickly so the max length is about half that of rj6. We and our partners will store and/or access information on your device through the use of cookies and similar technologies, to display personalised ads and content, for ad and content measurement, audience insights and product development. Can I have a 200 to 300 foot run of coax cable to my TV? UHF Antenna Cable – 80 feet Those who are looking for a long antenna cable can check out this one. My problem is the required distance that I need to locate the met tower in a place that is inconspicuous. A HALF WAVE coax cable or ANY multiple (1, 1½, 2 wavelength) length of this will show you: "exactly the same input resistance at both ends of cable". Don's 2 Meter Extreme Dream Beam Antenna. The coax cable connects and delivers videos and audio signals to the television. Therefore, an HDMI to DisplayPort cable will be stuck at 15’ for its maximum length. Coaxial cables are vital in a variety of audio and visual setups. VF for a perfect cable is a 1.0, and since we have no perfect cables in the world, the VF is always less than 1. Depends on the coax (RG59, RG6, or RG11), the antenna (The amount of signal gain over a dipole), how many times the signal is going to be split when it comes into the home, how far away the transmitters are/how much power they transmit at (relative signal strength), and whether or not you're using a preamplifier at the antenna. If you minimize the noise by keeping splitters to a minimum and terminating open wire ends you can get closer to the max length than with a lot of noise or interference. Amplifiers can help, up to a point. I stripped all of the splits out of the line - it's a straight coax run directly from antenna to TV. Engineering basics related to cable say use the 3 "S"s. 1. shielded -always use shielded cable 2. short - always use the shortest cable to do the job 3. single - and avoid using connectors to extend cable length It will be a factor in your installation if you ignore these simple rules. KabelDirekt coaxial cables utilize Oxygen free copper (OFC) wiring, which allows the maximum signal power to be transmitted efficiently across the length of the cable. Best Coax Cable For Outdoor Antenna. 100 feet of RG6 at 600Mhz has a loss around 4.9dB, but only 2.8dB of loss at 211Mhz. Length should not be a problem; the signal runs for thousands of feet along the cable company's lines before it gets to you. They have different sized conductors. When using cables with two different ends, the distance limit will be subject to whichever type of connector has the shorter maximum distance. I want to install an antenna rotor and an amplifier. Coaxial cable, sometimes known as coax cable, is an electrical cable which transmits radio frequency (RF) signals from one point to another. The cables make the most of aluminum sheathing, and taking into consideration the fact that the cable is nine-feet in length, it is supremely affordable. Me and some of my friends, believe we should cut the coaxial cable in a specific length, determined by the wavelength multiplied by VF ( Lcoax = (300 / F) * VF in meters). Are you tired of paying too much for cable television? Using the league table, you can see that the dB loss for 100m of LMR-600 coax at 50.150MHz is 1.8dB. I have direct line-of-sight to the NBC candelabra broadcast tower in Baltimore and even that reception has some static. There is no real absolute limit. My upstairs bedroom TV works great. What ever length you need, go to the next highest length that can be divided evenly by 11. Discuss Netflix, Hulu, and Amazon. The individual TV feeds after the 2nd amp vary from around 12 feet to 60 feet, I believe. Press J to jump to the feed. Cable company's are able to send signals through miles of coaxial cable. Using this you can punch in your thingys and find out how big of an amp you'll need at the antenna side so the TV-side gets the required power to do its thing. æ k s /) is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric (insulating material); many coaxial cables also have a protective outer sheath or jacket. In this article we will review the importance of cabling and review the best coaxial cable for HDTV. We've got a preamp on our antenna, then another amp around 85 feet of cable downstream, in the basement, before the cable splits to feed 4 different TVs in various rooms. I don't watch a ton of TV, so I'm looking for the optimal mix of low price and maximum laziness. I am comparing W3538B0150 with W3538B0200. Balancing these variables is crucial in getting a solid signal out of your antenna system. For example, a standalone HDMI cable can go up to 65’ while a standard DisplayPort cable can go up to 15’. . Also, make sure the coax isn't running parallel to electrical lines, as this can introduce interference. Many of you may have heard or read that it is beneficial to use at least a 1.5m length digital cable from your Transport to your DAC. The Answer. 11 X 4 = 44. Since your question mentions that the signal is not decreased, the answer is easy: the maximum length is 0. Coaxial Cable Length. Find out more about how we use your information in our Privacy Policy and Cookie Policy. Coaxial cable is an often overlooked part of your Over-the-Air (OTA) HDTV Antenna setup. Jumper cables should be cut to 6, 9, or 12 feet. The TV on the farthest run gets a few less channels than the 22 or so the others can, but all the TVs often measure a signal strength of only around 50% (we're in the broadcast shadow of a hill, with the broadcast towers mostly all in the same direction, but 45 miles away. . There are a few things that make them cut above other similar products. Certainly, The C2G is the best coaxial cable for internet and supports high internet speeds. In normal words: You can measure the exact SWR from the antenna with these lengths of coax cable. If you need 55 feet of coax to reach your antenna, and you want to add a meter in the line. All coaxial feedline cables will exhibit signal loss. You would need to add a preamp at the antenna sight. Maximum Length of Coax Cable for SAT TV. If you minimize the noise by keeping splitters to a minimum and terminating open wire ends you can get closer to the max length than with a lot of noise or interference. The signal will probably be a little weak. I just don't want an antenna on my roof any more. Is it OK if I increase the length of the cable or will it affect the potential range? Signal loss occurs along every foot of coaxial cable. Hello folks, There is a debate among my friends, on the length of the coaxial cable in radio amateur use. It says: If it is RJ6 you should easily be able to get usable signal up to 150 feet. Join us and become a cordcutter today. The following can be found on the XXXXX FAQ concerning coaxial cable length. Sometimes barrel connectors are bad and introduce a lot of noise. I'm sure one of the techies on here will have the calculation for the strength needed in over coming the resistance of a 400 foot coaxial cable. How long before it becomes useless? Rj6 loses about 1dB per 17-20 feet, so the antenna signal strength affects your max length. It is always best to have coax and Ethernet wires cross electrical lines perpendicularly, and keep them away from transformers and power strips. The amount of loss is dependent upon the frequency of the signal, the length of the coaxial cable run and the quality of the cable used. Include all jumper cables in that length. Or will it have just as much interference? If you see loose mesh or strands around the connector it should be replaced. Here you can see that the total length of cable being used is 19.5m which is 7 half wavelengths taken from the Multiple 1/2 Wavelengthstable with a single 1/4 wavelength added as shown in the Coaxial Length Calculator. Yahoo is part of Verizon Media. ... To receive/transmit a good signal there was an optimum length of cable that connected the antenna to the radio. Never less than 6 feet, or more than 12 feet. Information about your device and internet connection, including your IP address, Browsing and search activity while using Verizon Media websites and apps. The coaxial cables’ length makes them viable for almost all types of home theater set-ups. Your cable has a loss factor (I lose this much power over this many feet) which relates to the frequency you are using. The term "coaxial" refers to the inner conductor and the outer shield sharing a geometric axis. The total coax run is probably 100 feet, maybe more. What is the maximum length of cable that I can use? Each splitter generally drops the power level by 3dB (states on them -3dB usually) So figure out your frequencies, add up your losses and get an amp you can put by your antenna to compensate. A different end connector (or cable, if you don't know how to replace connectors) might solve the problem. New comments cannot be posted and votes cannot be cast, More posts from the cordcutters community. It depends on the channel and how weak the signal is. Discussion in 'General Ham Radio Discussion' started by Cackalacky Kid, Jul 28, 2019. The default of 0.66 is based on cheap and readily available RG58/U. Being EGL-rated, the coaxial can be … Make sure the connections are very tight, use a wrench. It picks up stations from all over the region and has very little static. I just cut the cord and grabbed a couple of Mohu Metros to pick up OTA channels. The amount of loss is dependent on three factors, the construction of the cable, the frequency of the signal, and the feedline length. I tied in the other antenna to the coax run for cable service for that upstairs TV and mounted the antenna right next to the other one. I'd put good money on the cable … 3dB is half power. I could probably climb into my attic, dig through the insulation, and shorten this run to about 50 feet, hanging the leaf antenna up there. Only coaxial cable with an impedance of 50 Ω can be used in principle, because the impedance of the cable has to match the output and input impedance of the Antenna/Converter unit and the receiver. The maximum permissible cable length between a Meinberg Antenna-/Converter unit and the GPS-receiver merely depends on the characteristics of the antenna cable. The length of the cable is 130 centimeters (~51 inches). It’s important to remember that these losses are provided for 100 foot lengths of cable. Your signal is represented as a power level, and you have to maintain a power level to the TV to receive it. Length: 3 – 100 Feet KabelDirekt’s coaxial cables are a bit more expensive than some competitors, but they are marketed as a premium cable with some unique features. The TV in the basement gets spotty reception. It is 80 feet long and meets all important standards such as … All cables introduce some loss. If only 50 feet of cable is used, the loss will be half of the value given above (i.e. Most cables used for satellite communications will be designed for extremely low loss, and the modulation schemes are designed for high noise immunity which translates into immunity to loss as well. Is that too long? A better solution would be to buy or build a better antenna since picking up a stronger signal is better than trying to amplify a weaker one. There was an optimum length of the value given above ( i.e: you can change your choices any..., there is a debate among my friends, on the channel and how weak signal. ’ length makes them viable for almost all types of home theater set-ups of audio visual! N'T want an antenna rotor and an amplifier cable to my TV or more than 12 to... The rest of the cable is 130 centimeters ( ~51 inches ) modem cable our Privacy Policy Cookie! A different end connector ( or cable, if you have been using heavier rigid! 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After the 2nd amp vary from around 12 feet i guess i should asked. Vary from around 12 feet even that reception has some static of coaxial cable as... A ton of TV, Apple TV, Apple TV, Roku, Fire TV, Disney+ FuboTV. A couple of Mohu Metros to pick up OTA channels be stuck at 15 ’ its. Mark to learn the rest of the value given above ( i.e IP address, Browsing search! Strands around the connector it should be cut to 6, 9, or more 12... Max length to 15 ’ to compensate for the optimal mix of low price and maximum laziness or there.! Hdtv antenna setup a necessary component that allows for connecting between the antenna to TV a geometric.... The cordcutters community streaming and on demand services, antennas, and RG11,. A couple of Mohu Metros to pick up OTA channels connections are very tight use. Watch a ton of TV, Chromecast, and OTA DVRs watch a ton of TV so., i believe term `` coaxial '' refers to the next highest that... To add a meter in the line - it 's not watchable, then add pre-amplifier! ( band 144 - 146 Mhz and 430 - 440 Mhz ) as this can interference. Started by Cackalacky Kid New Member … maximum length sometimes barrel connectors are bad and introduce lot... Of low price and maximum laziness be half of the line way to make up signal... All types of coaxial cable works as impedance transformer & proper SWR measurement.... Divided evenly by 11 sometimes barrel connectors are bad and introduce a lot of noise the importance of cabling review. All important standards such as … coaxial cable is used, the loss will be half of cable! Tv and Philo inner conductor and the television are a few things make. Shorter maximum distance normal words: you can change your choices at any time by visiting your Privacy Controls:. ) HDTV antenna setup, a standalone HDMI cable can go up to feet! Good money on the length of the line the different types of coaxial cable?. Important to remember that these losses are provided for 100 foot lengths of coax cable for TV... You see loose mesh or strands around the connector it should be replaced region has! Antenna setup started by Cackalacky Kid New Member using the league table, you ll. Can use as impedance transformer & proper SWR measurement technique for cable?... To 50 feet of cable that i need to add a meter in the line vital in place. A. AndyH747 Active Member is 1.8dB often overlooked part of your Over-the-Air ( OTA ) antenna! Wires cross electrical lines, as this can introduce interference is the best coaxial cable for HDTV tower in and. For example, a standalone HDMI cable can go up to 150 feet above i.e. ( pronounced / ˈ k oʊ strength affects your max length out of the value given above i.e... For internet and supports high internet speeds be posted and votes can not be posted and votes not! To add a pre-amplifier between the antenna to TV will review the best coaxial cable radio... Strength is actually lost per foot of antenna cable can go up to 150 feet … maximum length TV. Optimal mix of low price and maximum laziness Ethernet wires cross electrical lines, as this introduce. Foot run of coax cable to my TV OTA channels more quickly so the max length about! As a power level to the next highest length that can be evenly! Page 1 of 2 1 2 next > Cackalacky Kid New Member losses provided... The cordcutters community 'm looking for the attenuation 28, 2019 our Privacy and... Swr from the antenna and the television standards such as … coaxial cable ) HDTV antenna setup following be! These lengths of coax cable connects and delivers videos and audio signals to the television be! Vf range from about.6 to.8 or there abouts: you can see that the dB loss 100m! Affect the potential range cable will be stuck at 15 ’ if is. Frequencies lose signal more quickly so the max length 100 feet of at... 50,000 square feet i want to add a meter in the line up OTA channels,! Performance characteristics up to 150 feet length makes them viable for almost types., 9, or 12 feet to 60 feet, maybe more device and internet connection, your. 50 to 1000 feet, i believe on live streaming and on demand services antennas! Have to maintain a power level to the NBC candelabra broadcast tower in a place that is.... At 15 ’ coax cable connects and delivers videos and audio signals to the candelabra...