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MichaelS Great tip of using a 18 foot aluminum pole, nice and light weight. I also like the idea of using a drone with a phone connected to it and just flying it up vertically. And yes, I do have an "always on" internet connection by using a 4G cellular data modem. As both the booster and cellular modem use about 10 watts of power each, leaving these on 24x7 is not that expensive and both of them are connected to a UPS for the occasional power outage and power transient protection.
Now from that always-on internet connection, I can turn the furnace on, the lights on when I arrive late at night, get alerts when a power failure occurs or just look at the cameras to ensure all is well. All of this is much easier than people think and I need to write part 2 of this blog to explain that aspect better. I will say negotiating with the cellular carrier for a good data plan and rate is key, and not accepting their list price for a data only service.
Typically try for a data sharing plan with your phone. I hope that answers your question but feel to ping us again. And thanks again for the tip, I'm sure the readers of this blog will appreciate it. Your information is excellent here.
A tip for readers, and a question for you: Tip: To see if I had a signal worth boosting at a second location, I taped my phone to an 18 foot aluminum pole and held it high above my roof, using a screen recording app to capture the signal as reported through LTE Discovery app Android. Question: Your mention of remote heating control suggests you have an always-on signal at the cabin. I'm sketching out a few ways to do this, while saving power and data.
Perhaps the booster wakes up on a timer periodically? What are your thoughts? Thanks for giving me hope. I will hopefully get this to work. Seems odd all the technology in and a cell signal is a stumbling block. Karen part 2 of And the antenna does need to be pointed directly at the cell tower since they are highly directional. I know there are Weboost partners available that will work with you to provide a "custom" kit designed to your needs.
I hope that helps and believe this will work for you. I actually had zero bars at ground level and now I have four bars in the cabin so your starting with a better situation than I did years ago. And when working with any Weboost partner always ensure you get a 30 day money back guarantee just in case.
Hope that helps and let us know how it goes. Karen part 1 of 2 The good news is you can occasionally get 1x service at ground level, so there is a signal to be captured and amplified. As for companies saying they can't help you, that's highly unfortunate since you seem to be a perfect candidate. Now the challenge I am seeing today is many vendors are offering "kits" and these kits are not optimized for your situation but more for ease of installation.
For example, many kits use LPDA antenna's since covers more bands with reasonable antenna gain. Equally cable losses add up quickly since many kits being price sensitive provide average cable and probably much longer than you need. Many systems use 75 ohm RG6 cable that has a loss of 7. However using 50 ohm LMR cable at Mhz only has a loss of 3.
So an off-the-shelf kit is great for areas where you already have 2 bars, however in situations where it varies from 1 bar to none then we really need to design the system for maximum gain Hello, I have a cabin where I have gotten 1x service.
Than no service. Pine trees and hills are around us. I have sent an email and received an email once or twice. I ask about a personal tower and they offer no kind of advice if that would help or not.
Does a cell signal fan out from tower or follow straight line? Can I point an antenna at an open area that has a signal even though the actual cell tower is just crossing that area? Hope that made sense. Mark, The viability of this solution totally depends on the frequency band your mobile device operates on in your location.
So yes, this solution will work in Mexico as long as you optimize the solution for the frequency band your carrier uses in that area with your device. Hi Has anyone used this in Baja Mexico? What advice do you have to make it work best? Since this amplifier draws approx.
And if you do decide to use batteries ensure you use a low voltage cutout relay available from Amazon and many others to turn the DC power off to the amplifier if the battery voltage drops below 11 volts. For the indoor antenna, the Weboost which is a wall mount would need to be mounted on a board that you could then strap to a pole in the area where you need coverage. So yes, this is very doable. Now the components reference in this reply are for a 50 ohm impedance system using N type connectors.
If you decide to change up some aspects just ensure all components including the cable are all for the same impedance and connector type. Good luck and again, cool application. Todd Part 1 of 2 What a cool application, and yes with a couple of tweaks this can work well for you. Now since your video shoot location changes one never knows what cell towers will be in the area for you to connect to.
As a result, using a Wide-Band and not a Yagi directional antenna offers the best solution for this application like the Weboost As for battery power, the simplest solution is to use one of the amplifiers that uses 12 VDC as the source, like the Connect 4G-X. This amplifier also covers many of the cellular bands while providing up to 70db of amplification. I'm not a fan of using power inverters UPS's to power the amplifier AC adapters since inverters produce a lot of line noise onto the power line which we need to minimize for best results.
Al, First of thanks for your blog! I run a video company that has the ability to upload video from the sporting event. We upload the clip to the cloud using cell phone data.
How would I make your system portable enough that I could set it up in minutes at a field so that I could have a strong enough signal to push up the video and spectators could download to watch instant replay? We have already created a 25' fiberglass telescopic mast to mount our video camera to shoot the event. Could we use the same mast to mount the necessary antennas? Could we use battery power for the amplifier?
Thanks for any help. Ken, It sounds like you would like to create an intermediate amplifier site between the tower and your location to bring in the cell signal since placing amplifiers back to back unfortunately does not work for multiple reasons.
Now technically an intermediate amplifier site is possible. The challenge becomes weatherproofing and power at the intermediate site and complete lack of technical support since that configuration is not supported by any manufacturers I'm aware of. Hopefully that answers your question, but if not - please provide more details of what you are trying to accomplish. I would like to try to retrieve signal from an elevation of approx. Could I connect two boosters in line and pull signal down in valley with directional antenna.
It looks like that a person could do this, like we use to boost db for telephone network. Is this possible? David Since you actually have a signal at your drive entrance, a 30' tower like described in this blog should work for you.
As for finding the nearest tower s to your location, the best method is to call tech support for your carrier T-Mobile and ask them for the location of "towers" in your area and verify what frequency they are operating on as well.
The reason I say towers, is sometimes the nearest tower to your location is not the best due to poor line of site caused by hills, trees, etc.
As described in the article above, you'll need to place your phone into a test mode to get the current receive signal strength updated every second.
Once you do that, just turn the outside antenna slowly around the bearing where you know the tower is located to find the maximum signal strength.
So if you have two towers to test against, say one at a bearing of 90 degrees true and another at degrees true from your house, then turn the antenna say from 80 to degrees and record the maximum signal strength, and then do the same for the other tower in this case from to degrees.
Once done, just fix the antenna at the location that provided the maximum signal strength and all done. I live in NC in a low area in mountains, I am on the tmobile network. I can get good signal at top of hill on my property about yards away and a very weak signal at my drive entrance, do you think a 30' tower as you describe would work for me?
Also how can I find my nearest cell tower? Any advice would be greatly appreciated, Thanks. And yes, LMR is a much better choice than RG so congrats on doing the cable homework that many dislike. Larry That DT4G is older for sure with amplifier gains from 50 to 60 db, which is respectable depending on where you are.
Now this unit is a bit of an odd ball in that the inside antenna is 50 ohm impedance and the outside is 75 ohm impedance. So you need to be careful on what cable types you use for each as a mismatch will seriously impact performance. For the outside antenna connection, you can use RG preferred or RG-6 as both are 75 ohm. Since RG-6 has a much higher signal loss than RG, RG is preferred as cable loss is bad and something we need to minimize.
Finally changing the outside antenna to a high gain directional antenna will make a huge difference especially as you mount it higher. So have faith in that DT4G as it can probably still do the job you need it to do. Good luck and hope that helps. John I Part 2 of 2 Now the good news is that you can easily start with just doing 2 floors and then add the third floor at another time or start with three and then if that proves to be too much loss drop back to two.
The outdoor antenna and amplifier remain the exact same. So my favorite design as most readers know starts with the Yagi antenna on your roof for maximum gain. Then you'll need a very high gain amplifier since it needs to power two or three internal antennas. As a result, try to minimize the length of the RF cables as much as "practical" to minimize cable loss while using ultra low loss cable. For this design you need to find a retailer that will cut RF cables to the specific lengths you require and not use pre-manufactured lengths.
For the placement of the indoor antenna's on each floor, place them in the area where people generally have their cell phones. That should do it and have fun on that 30' peaked roof.
So glad it's you and not me. John I Part 1 of 2 Well you certainly have a head start over most of my followers with 2 bars of signal strength so that part is awesome. Now as T. Mobile are licensed for 5 different frequency bands starting at Mhz and going all the way up to Mhz, we need to make sure we design this solution for the lowest band available off that cell tower you're connecting to.
A quick call to T. Mobile support should give you the answer you need. As for using an old satellite mount on the peak of the roof - that should work fine as long as you secure it properly so it does not twist in the wind and I would recommend attaching a ground wire to it just in a case of a near lighting strike and this way we route that electrical power to ground quickly and not through the house.
As for the question about an indoor antenna on each floor. It really depends on the use case for how often it would be used on that floor and I would not depend on one antenna being able to cover the complete house. Many people install wall mount antennas so the receive pattern is for anyone in front of that antenna and not on another floor.
A ceiling mount antenna could probably beam through one floor but not two. And since each antenna needs signal power, the more antennas you have, the less power at each antenna. Three indoor antennas means splitting the signal power in thirds Thanks so much for the amazing info!
I am trying it to be too optimistic, but it sounds like I should be able to boost my signal fairly easy. I have Tmobike as a carrier and we tend to attain 2 bars on our iPhones outdoors. I climbed on my roof, about 30 ft at the peak, and noticed the signal was still two bars. I am thinking of using an old satellite mount to attach your setup to and boost the signal indoors. Any points of advice other than to follow your instructions closely?
And, our home has three floors, should I put an indoor antenna in each floor, if so is there an amp that provides three outputs? That said, if your cell phone can see a signal of then a weboost solution should work for you but it will need to be "designed" for that specific cellular frequency you are receiving and unfortunately not an "off the shelf kit" which tries to be more universal and cost effective but with lower overall system gain.
Now depending on your phone, when it is placed in diagnostic mode you should be able to see the mode and band the phone is operating on when you receive that dbm signal.
Once you know that, then the key aspect is getting an outdoor yagi antenna designed for that frequency and then using ultra low loss cable to connect everything. The yagi antenna has a very high gain and extremely focused which should be able to pull in that dbm signal and boost it for a good mobile connection. Great information. We are on top of a mountain with no surrounding trees at feet in Colorado. We have had great service with ATT until about a year ago.
We can see the tower about 8 miles away as the crow flies but it went down with "promises" of upgrading it. The town population 42 and school are 4 miles away with a mountain between us. My dbm''s show our best signal is from a town 35 miles away, usually to We tried the Weboost and sure call with no improvement. The signal was bouncing off different towers. We have no landlines and we use our phone for everything, mobile hotspot for internet and calls Any suggestions?
Barb The costs for these systems can vary greatly, especially depending on the manufacturer you select. As for the cell signal outside, the signal extends outwards from the indoor antenna depending on which one you select.
A ceiling indoor antenna provides for all around coverage and a wall mount provides coverage in front of the indoor antenna. As I have the dome antenna on my cabin ceiling by the front door, guests can use their cell phone on our front porch with no problem. Hope that answers your questions and if it helps this has been an expense I've never regretted since it allows me to work remotely from my cabin on the lake, anytime, any season..
Chris the end of the earth So hoping your still on planet earth and I'll try to explain those numbers, albeit I need to know more information about your phone, the mode it was in and your carrier to more precise. So it's likely best guess that those numbers are showing you the voice receive signal strength rx0 and the data receive signal strength rx1.
When the voice signal strength drops to dbm or lower the voice call is in danger of dropping and at dbm there is typically no signal. So dbm is on the fringe of having the call drop.
On the data side there is typically 10 db more of margin, so at dbm the data connection is at risk of dropping and at dbm is typically no data signal. Hence at dbm, I gotta believe the data signal is gone. Bottom line, these are very weak signal levels so a booster would definitely help improve your reception at the end of the earth. Rosie I believe what you're looking for is a mobile solution like the Weboost Drive Sleek which has a cradle you place your phone in and a small outdoor antenna that you can place on a tent pole outside the tent.
There is still an amplifier that can use either 12V from the car battery or 5V from a USB battery pack which is useful to have when camping. Another option is the Drive 4G-X solution which has a simple outdoor and interior antenna that will support multiple phones inside the tent or on a picnic table which offers twice the gain of up to 50 db. However in this case a 12V car battery is required to power the amplifier which could be used with a power inverter to power other items, like a coffee maker.
Hope that helps and happy camping, with cell phone coverage. Emma So Freedom are using Band 4, which means the uplink frequency is Mhz while the downlink is Mhz and yes, 16 km is pushing the limits but not impossible especially if you have a good line of sight to the tower as the attenuation is only atmospheric with little to no foliage attenuation. Your success also depends on how much power Freedom Mobile is transmitting at the tower.
So the challenge is to optimize the RF design for Mhz. Unfortunately Band 4 Yagi antennas are tough to find but not impossible and you should be able to find one that offers a minimum gain of 13 db across the complete band. The amplifier is also a critical element, so ensure you select one with maximum band 4 gain. The weboost Connect 4G-X offers a solid gain of Good luck and have fun with the project.
Thanks for this article. I'm wondering how far I can be from my nearest cell tower. I'm with Freedom Mobile and their towers seem to be at MHz. I think we have pretty good line of sight from 16km away but I have no way of knowing and it sounds like that's not even realistic for a MHz band. Hello, Very interesting article - thank you! I am looking to do something similar - although this will be for long term camping in a tent and I was wondering if you knew how to boost signal for just outside as there is no inside?
I only really need to have coverage in one spot. What would you recommend? Many thanks in advance! I've been dealing with a constantly degrading signal for some time.
I was inspired by your antenna. Here's what I have: an rx0 dBm and an rx1 Please help me try to understand this? Raymond As a rule of thumb, each antenna should have an unobscured line of sight to its target. In this case we need to keep these antennas separated by as much space as possible and pointed away from each other. Lisa This is a very cool idea and I would encourage you to contact various cell phone booster companies like WeBoost and others to see if they would participate with you.
I agree drones are very cool, however antennas tend to be awkward to maintain in place even by a drone especially if there is any wind. Not to mention we have limited power availability on the drone as well. I would suggest looking at 50 foot telescopic mask assemblies for raising the external antenna as high as possible and then using sealed lead acid SLA batteries to power the amplifier system up.
They are government focused but the idea is there. In fact this could be a great mechanical engineering project as well. Good luck and awesome idea.
Pedersen To answer your question about using a high gain external antenna with a low gain indoor antenna without any booster. Now to put this into perspective. A received cell signal strength of dbm is awesome while dbm is call dropping ugly. So, if you want to improve a weak signal from dbm, this would only improve it by 13 db to dbm which is still a very weak signal, but yes, it is better than dbm and could prevent a call from dropping.
Great question. A directional antenna as described in this article looks in one direction only and can pull the weaker signal out at lower heights. It also depends on the elevation of the cell towers plural in your area. It all depends on the frequency, elevation and azimuth of the towers in the area. For example, a tower further away that is elevated higher and aimed your way would be better than one that is closer but lower in elevation height.
As a worst case scenario, junk yards are filling up with old tall analog TV towers. If you proceed, please let us know how it worked out. Hi - I need to get above a 60' sand dune that is about ' behind our cottage to get a good signal. Any suggestions on how to adapt your concept to our situation? The only remaining challenge is to use a good low loss cable like LMR or LMR if 50 ohm system and I would invite you to read the answer I posted to Thomas above.
The signal loss of 4 to 6 db introduced by the extra cable in this situation will be manageable in my opinion due to superior signal capture from being 50 ft up. And I would encourage using a high gain directional Yagi antenna coupled with a good high gain amplifier to complete the solution. No one in Canada would sell me just the new amplifier saying I needed to purchase a complete kit or alternatively I could go to the US.
Christina Glad you enjoyed the article and hope it helps. Now to answer your questions. The main cost for this solution is the bi-directional amplifier. As for the antenna, this is a critical component of the system design and really needs to be purchased.
Antennas are the unsung hero in these types of solutions, since a proper antenna significantly improves the performance of the system where the improper antenna totally cripples the system no matter how good the amplifier is. Now for your final question. Although we have many cable types in this industry, just think of that like all the various types of motor oil we have.
We have SAE 10w30, 90W, synthetic, etc. Same for cables and in this case, our engine is the amplifier. With that, selecting all the other components becomes easier and make sure you use a good low-loss cable like LMR Any weboost partner you select to work with, will ensure all the components work properly together making your task of connecting it all up, much simpler.
I had the same issue where at my cabin door if I turn my amplifier off, I have no signal at all. That said, if I walked up a nearby hill, then the signal starts to appear again.
With that information, you can now work with a Weboost partner to select the components you need, including low loss cabling in the lengths you need. I would recommend a real Yagi antenna for the absolute maximum gain versus the newer LPDA antennas that some people call a Yagi antenna, however in reality they are not see my other response to GTS in this blog to address that issue. My tower is 30 feet high which is pretty well the maximum height one can go without using any guide wires on the pole.
Of course the higher you go, the better. And finally, all Weboost partners should offer you a 30 day full refund just in case it does not work which eliminates the possibility of having expensive paperweights.
However, by using LMR what I used , this number drops to 3. Keep in mind that 1 db could be the difference between a working signal and no signal. Now I've also seen people accidentally mix up cable and device types.
So if your system is 50 ohms impedance, make sure all devices; antennas, amplifier and cable have an impedance of 50 ohms and not 75 ohms. A mismatch in impedance between any two connections seriously impacts performance. Hope that helps and makes your life happier. Dorothy, Fantastic question and the answer is with the right components yes. The principles for amplifying and repeating a cellular radio frequency signal remain the same. Because of higher signal attenuation caused by the atmosphere, trees, buildings, etc.
This is why I like the MHz cellular band since it has the greatest range from the tower. So 5G repeaters when available is not the answer for people in remote areas since unlikely there will be any nearby 5G cells they can capture and repeat.
However in urban areas, where one could just be outside of a 5G cell, a repeater solution could make sense to gain access to the incredibly bandwidth that 5G will deliver. Part 2 of 2 Now the amplifier offers a maximum gain of 65 db, however according to the user manual back pages Mhz the nominal gain is only Hence for performance, it's purely a numbers game, that is antenna gain, minus cable loss, minus any splitter loss, minus connector loss, plus amplifier gain all defined at the cellular frequency of interest.
The bigger that sum number is, the better your chances are of improving your cellular reception. As for me, my personal preference is to work with a Weboost partner that allows you to pick and choose the components including the length of cable you actually need to connect everything.
The shorter the cable, the lower the loss. Hope that helps and as always, if you buy the kit just ensure you have a 30 day refund policy with no restocking fees. That was a great question and thanks for asking Al. GTS Part 1 of 2 due to 2, character limit So welcome to consumer kit simplicity versus a properly engineered repeater system, and unfortunately in my experience the two just never meet.
And I personally apologize to other posters here for not responding. I will answer the outstanding questions here soon. So let's get started in this numbers game starting with the antenna. The difference between using a directional Yagi like I did versus the LPDA Log-Periodic Dipole Array antenna in this kit, is a Yagi antenna operates in a narrow frequency range, however with much higher gain, a very good thing. The LPDA antenna operates in a much wider frequency range with much lower gain.
Welcome to engineering design trade-offs. So the LPDA antenna is more consumer friendly operating over more cellular frequency bands with reasonable gain than a high gain frequency specific Yagi antenna. That 6db is very significant if you are in a weak cell phone area and unfortunately no amount of amplifier gain can compensate for a low signal input from the antenna.
Now, let's talk about cables. The 75 ohm kit includes fixed length RG6 cables which are easier and more flexible to use from a consumer perspective however RG6 introduces additional loss of 6db per feet, where a 50 ohm system with LMR cable is only 3. However, the cable is thicker and much harder to handle, again a design trade off. Easy to handle and connect versus optimized design.
Al, Thans for posting. It seems to a luddite like me that this is the same thing are doing but that the outdoor antenna is probably not as focussed? Is that correct? I'm in between 2 mountain ridges but if I can get any signal I assume I can improve on that, but I find due excellent instructions confusing and would rather just use the kit if it's the same thing.
Thanks so much. I put the link to the kit below if you dont know what I'm referring to. My phone signal strength very week in my home so i get poor network connection how to i get good network connections please help me. How far can I run the cable from the outdoor antenna to the indoor antenna without fail?
I ask this mainly due to happy wife, happy life. She suggested I mount my outdoor antenna pole at the bar. Which is approx ft from the house. Inside you can forget it. I am really considering building my own like you did, but need figure out my distances. Hey Al, thanks for the great article. My problem is similar to some other folks. Our cabin is deep in a heavily wooded area of TN, situated between two ridge lines approximately feet high. We are at the bottom of in the little valley directly between the ridge lines.
Using the 'signal strength" feature on my Android phone, I get nada, zip, zilch. It also says 'no network' and 'no signal. The display records 'LTE' as the network type. However, given the ability to text as well as others occasional success in calling, I can help but think there's something there. I'd really like to try to improve things, but neither do I want to invest in equipment that ends up becoming expensive paperweights.
Any thoughts? Suggestions welcome. Thanks - Bob. So I'm thrilled that we found your article. No one else services our home area. After 2. Reading this, it seems like there may be hope! I have a few questions tho: 1. What would be the average cost of building this if we didn't have any of the materials. I've been looking into the WeBoost cell signal boosters, but I didn't know if it would work without the extra antenna?
We have an old TV antenna attached to our Chimney, the 's kind. Would that work? Could I maybe find out how to rig it to work as an antenna? I am "so so" tech savvy, much further behind that you I work on my computer and smaller things, but nothing this large. Any advice on how to tackle a big project like this for someone who doesn't know the difference in cable types? Thanks so much! Thanks for your article Al Our cottage is in a valley in Quebec and we get 1 bar of signal at best, so I was all set to purchase the equipment you used from Wilson, but had trouble ordering the 55 dB gain amplifier.
Any suggestions? Hi Al, Thank you for this great article. I just bought a new home in the mountains which sits in a canyon, there is no cell signals and only one home phone provider to choose from. I've gone without a phone since I moved here in December. The set up was a little challenging because I did it by myself and had to go up 40 feet to get a signal using 10 foot poles but the struggle was well worth it.
Thanks again for sharing. There is a 50 feet old radio operator tower on the property about ft from the house. If I put the outside antenna on the tower and then run cable back to the house and the amplifier, will this same system work or will the cable length to the house cut into the effectiveness.
Hi, nice setup for boosting your cell phone signals. Just curious what the appropriate cost was for your setup. Could a hi gain antenna without a booster be used to transmit a signal to an indoor low gain antenna? Hi Al, I really liked your article! I am currently working on a university project where we are looking at creating fast, make-shift cellular networks during the case of a natural disaster.
For instance, during the Nepal earthquake, or during the wild fires in Napa Valley that destroyed some towers. We are wondering whether it would be possible to create a temporary make-shift network for a small number of users, potentially using drones to distribute antennas in a network. I feel like you know a lot about this topic, and was wondering whether you would be willing to jump on a quick phone call with me to discuss this idea.
Thanks a lot! Great info, thanks. Are there any concerns about placing the cell antenna in proximity to TV or Internet satellite dishes? Don The good news is the tower is on top of the hill and it will be broadcasting down into the valleys below. Now if the tower is within a 5 mile radius of your location, then there is probably some signal by your home if you go high enough with the outdoor antenna. All we need to make this solution work is a single bar on your cell phone and then this solution described above will increase that to reliable full bars inside your home.
So the million dollar question is how high must one go, for which there is no easy way to find out. I personally like using a drone for this as I've noted in other comments where you fly the drone up to say 30 feet, let it sit there and see if a single bar of coverage can be found.
If not, climb to 40 feet and try again or try another location around by the house until a single bar is found. I know various places will rent a drone, if that's an option you wish to consider. The concept of building a remote tower to act as a bridge for relaying the signal is interesting but in reality not practical nor feasible since this solution needs a stable indoor AC powered environment for all the electronics aspect.
Another option would be to purchase the highest gain solution with a 30 day money back guarantee and then install that on a 30 to 40 foot pole to see if that works. If it does, then do all the cleanup with running the wires inside the house and the likes. Let us know how you make out if you try any of these ideas since it would be very interesting for everyone to know.
Kyle So if you get full bars up the tree, the real question becomes where do you get 1 bar since that's all you'll need for this solution to work. It would be interesting if you could attach your cell phone to a drone with the drone camera looking at the cell phone and just fly it up vertically 30 - 40 feet to see where the cell phone just starts to get reception.
I'm willing to bet you don't need to go feet from your home and it's more about increasing the antenna height. Once you go beyond 30 feet in height, it would be good to attach some guide wires at one of the pole couplers to provide additional stability and then attach the guide wires to the building or ground.
All that said, you could go feet with cable if using a lower cellular frequency band of to Mhz. You just need to use an ultra low loss cable like LMR assuming 50 ohm impedance. LMR has a loss of 2db per ' at Mhz, so for feet this would only a loss of 5 db and is very manageable. However, if your cellular frequency is Mhz the cable loss almost doubles to 10 db and then this starts becoming questionable as a solution.
Laurel So getting the tower up 30' was a fun task for sure and does require 2 people. Now as noted in the article above I used 6 feet poles and this is manageable. However as noted by the comments above, someone tried using 10 feet poles and then that became very challenging. So if you can't find 6 feet poles, then have someone cut a 12 feet pole into two halves and just get them to re-thread the pole where it was cut.
Then I installed two brackets on the side of the cabin with a bigger pipe in the ground below. Next I attached the antenna and antenna cable to the top of one 6' pole section and slide that through the two brackets on the side of the cabin from the roof.
Using two brackets minimizes the pole tipping one way or the other. After that, I returned to the ground and literally just screwed the other 4 sections together and pushed the pole straight up.
I would recommend putting some thread sealant on the pipe joints to ensure they do not twist off with the wind. It really was not that difficult if you have a helping hand and do it on a day with little to no wind. I live at the bottom of a steep narrow canyon. The nearest cell phone tower is on top of a tall hill surrounding the canyon.
I currently have no signal and no direct line of site from my home to the cell tower because of the surrounding hills. Will your solution work for me or will I need to build a remote tower at the top of the hill that will capture the signal from the main tower and from there transfer the signal to my home? Sorry didn't finish my last question. Is feet too far to run cable to an antenna?
I don't think a 20 foot tower would be high enough to get direct signal to the nearest cell tower. My house is in a small, steep valley where cell reception is zero at the house but nearly full bars if I climb a tree about feet from my house up the hill. I know this is a more-than-basic question, but I have to ask. What method did you use to get high enough to assemble the tower?
Hey Al, Thanks for sharing your experience. This is a very common problem in rural Canada, even just outside towns or cities. I'm wondering if there's some way to calculate the broadcasting range of this homemade solution? I'd like to know what might be involved in increasing signal over several acres of land.
There's signal immediately outside these few acres, in the to db range recorded with a cell phone with below-average poor antenna , so I'm confident a tower and booster would work, though I'm not sure about covering several acres with good signal.
Tree cover and other factors affect signal, so let's just pretend this is a flat field for the sake of simplicity. Thanks again, Al. Maureen A cable longer than 20 ft is not a big issue, especially if you use ultra low loss cable like LMR you could easily go over ft.
As for height, how high do you need walk up the hill before you see any signal strength? That would be roughly the minimum height of the antenna you would need to install. And yes, transmission happens in relatively straight lines.
The good news is the lower frequencies like MHz, travel farther since they are not weakened attenuated as much by obstacles in the line of sight path like buildings and trees. As for the numbers , and they represent the various cellular frequency bands in megahertz which are highly regulated by each country's respective authority as to who can use them and their actual frequency allocation within that cellular frequency band.
Hope that helps and good luck! Hi I'm in the Magdalen Islands and not only is my house not covered by cell phone coverage, but the internet cable connecting the land lines and internet service to the mainland is getting more and more spotty. I'm thinking of putting an antenna in place but the tower is hidden behind a hill and I can only get reception if I climb up the hill beside my house.
The problem is that there, the cable would be a lot longer than 20 ft. I don't know how high I would have to have the tower to get a straight line over the hill between my house and the tower. Does transmission happen in a straight line?
Another question: The tower closest to me is rated at mhz, mhz and mhz. What do the and figures represent? And thank you for your innovative idea! Sctb So for locating towers in Belize you can start with the opensignal.
Specifically ask them for the frequency and azimuth of the nearest tower. As for building the tower, the blog post above does walk you through what needs to be purchased and how to build it.
Hope that helps but feel free to ask more questions here. Hi All, Thinking seriously about moving to Belize, but the lack of internet and cell service is a deterrent. Your ideas and suggestions on how to identify local cell towers in Belize would be helpful.
Your guidance would be greatly appreciated. Larry, The good news is occasionally you can receive a text by the cabin, which means there is a signal there, albeit very weak. And mobile phones with degree omni wide band antenna patterns cannot handle these fringe situations. So given that, I would say a cell tower like the one in this blog will provide you coverage in the cabin. As I've commented many times, a focused narrow band external antenna is critical, but let me explain that.
Narrow band means the antenna was designed and optimized for a specific frequency band and not multiple bands. Kinda like a laser beam that stays focused high positive gain versus a flashlight beam that spreads out quickly negative gain.
If you're operating in the Mhz band, then you'll need a different antenna. And of course, a good bi-directional amplifier is key. Hope that helps, but I'd say a solution like this, will provide you coverage you are looking for without going to the top of the hill. Al, great article but I am a neophyte when it comes to the technical stuff. I have a cabin in Tennessee, located in a valley, but I can go to the top of the hill about ft.
Sometimes, I can even receive a text when my iPhone is in the truck next to the cabin, but I can't send a text. On a few rare occasions, I have sent a text if I am out in the field in front of the cabin. Needless to say by phone normally says "No Service". Many years ago I had a Motorola phone a brick that I could hook up the magnetic car antenna and attach to the tin roof and receive reception. My question is will the directional antenna system you built work if I am located in the valley and surround by trees.
Mark, So we have feet of cable to deal with, which is a long run but not impossible. And for this example I will assume we have a 50 ohm impedance system as the cable impedance must match the antenna and amplifier impedance.
So an ultra low loss cable is critical for success as standard RG58 would introduce a loss of 20db at that distance and just not work. However if we use LMR that would introduce a loss of only 4. So I'm hoping you are using a lower frequency cell band around Mhz. Again, a good low loss cable is the key. I would need to locate the anrenna pole or mast up slope about 60 yards from my house. Will this cable length lose too much db to successfful? Krihan Great question and the answer is no.
Now for the why. The tower only amplifies the Radio Frequency RF signal carrying the data to the service provider's cell tower and does not participate in the encrypted data link exchange with the service provider's network. The decoding of an individual cell connection requires specialized receivers and full prior knowledge of the encryption keys one on the SIM card and mechanism being utilized. Bottom line, your cell phone calls and text messages are totally safe from towers like the one in this blog.
Again, great question and thanks for asking. Keith, In this setup, the outside narrow band antenna connects to the indoor bi-directional amplifier via a 50 ohm cable which then connects to the indoor antenna. Shahzaib Really sorry but the intent of this blog post was for pulling in weak cell signals and not starting a full internet service. Sounds like a great project so good luck with it. I literally did couple them together and pushed them up, one by one.
As for the bluetooth phone, if you go that route make sure you get one that supports two phones at the same time. For example, my wife and I can both make and receive calls anywhere at the same time via the same base station with two handsets..
Cheers Al. I want to start a internet service in my city so how can i start it how can i make it and which devices are used for sending signals and which devices catches. I looked into a bracketed tower and,was told around 3 grand for a self supporting one. No thanks. It's not my cabin, and I'm there for at the most 30 days per year.
I'll continue to tether my iPad and if I need to make a call I can stand beside the booster. It's a far cry from having to walk for 20 minutes up a hill, stand on one foot while touching my nose. And hope the call goes through. Usually only when it's pouring rain I also really like your suggestion of the Bluetooth cordless phones.
With no disrespect to you, or to hijack your blog, but I'd like to make a suggestion to your readers They are very heavy and 10 feet is too long to add pipe from the bottom to raise the tower. We had to build the tower on the ground and tilt it up. I was on the roof lifting the tower as others on the ground pushing up. It was a very humbling, scary experience. It is, but way too heavy and overkill. I went with 10 foot lengths because I thought it'd be faster with less pipe lengths and couplers.
Remember you want this to stay up and only want to do this once, not twice. As for the trees, Mhz trees add about 1. So tree loss definitely exceeds cable loss if that is the question. That said, a good high gain amplifier can compensate for some of this loss so it really comes down to what is acceptable and practical to the family. Your options 2 and 3 are indeed better but is it really worth the effort is the question for those extra db's of gain.
If tethering is the pain point, consider getting a WiFi cellular modem from your carrier and just place that near the indoor antenna. Then anyone can easily connect to it, without your phone being the hot spot. Hope you're enjoying the project! Hi Al. I forgot to ask what you used to secure the galvanized strapping to the eave? I've used deck screws but I have some lag bolts and washers. I'm guessing this would be a better choice?
Our tower is 30 feet high. This is the limit we can go unless we start talking about a bracketed tower of about feet or so which would be needed to get above the tree line. We have some very tall trees. We do have the option of mounting the antennae in front of the trees but we are talking about at least feet from the cabin.
Right now the outdoor cable is feet, so minus 30 feet leaves us with 70 feet of cable. We'd need about feet of outdoor cable to get,the booster inside. Would a tree free antennae give a better signal that would offset the signal loss of the cable? I have 3 options : 1. Live with what we have, and tether for Internet and just stand in the kitchen to make calls. Bracketed tower of feet to clear tree line. Longer cable run and possibly only 20 feet of height to get in front of trees.
I'm ok with number one, but assuming I want to do better do,you think 2 or 3 is the better choice? Brendan, Coverage from the indoor antenna will vary depending on the received signal strength from the outdoor antenna.
So if pulling in a really weak signal, it will fall off quickly as you move away from the indoor antenna. Adding another 10' to the pole will only help if it removes any obstacles like trees from the path to the tower. If your tower is already above the tree line and has good line of sight to the nearest tower, then adding another 10 feet will not help. Hopefully that helps you decide.
As for improving the indoor coverage, if the amplifier has enough gain 70 db? Then one indoor antenna could be located where your daughter uses her iphone the most. So although you have two indoor antennas for increased coverage, each is operating at half the power. This is why a good amplifier is needed to compensate for that power loss. Al, I didn't use thread locker, but I did use a pipe wrench.
Guy wires not needed. Only if I deliberately shake it. So right now, with the phones right next to the booster we can, at times pull in 4 bars of LTE! That's better than what I get in the city. We've been tethering. I'm totally happy, but my daughter wants it to be at home, I. I'm not sure if this is realistic? Coverage away from the booster varies time of day, and based on the provider. We have 20 feet of pole right now.
Do you think an extra 10 feet would be of any benefit? It would be a chore to do it, and I'm inclined to leave well enough alone and enjoy 4 bars of LTE and simply tether thanks for the Bluetooth tip! She doesn't want to tether because??????? Well I'm not sure why. Brendan Big Congrats!
So some final comments and suggestions for you. As you couple the pipes together, I might suggest adding some thread lock to them just to ensure they don't spin and come undone.
Otherwise ensure you use a good pipe wrench to thread them on, very tight. And depending on the weight, you might consider adding some guide wires at the top How To Build Your Own Boat From Scratch Zero coupler but only if you see lots of sway. This will help ensure it does not sway to much with the wind. This will ensure maximum internet speeds since the phone is getting the best cell signal from the inside antenna and then broadcasting that via WiFi tethering throughout your cabin for all the devices to connect to.
Again, leave the cell phone s near the indoor antenna and the base station connects to them via Bluetooth. I typically have a handset with me on the beach so I can receive incoming calls there with full bars on my phone by the indoor antenna. And this phone even alerts you on text messages. Enjoy and congrats again. I'm writing this comment from the cabin that now has "pretty good" Aluminum Boat Builders Pacific Northwest Tab internet.
I did a 4 hour round trip to grand forks It is kinda heavy but solid. There's nothin gonna take it down! So we only have 2 lengths of pipe for 20 ft. So far and we went from absolutely nothing to 4 bars. Only at the booster but we can tether our iPads.
I'm hoping to only need one more pipe for 30 feet total. Leary of 4 lengths because of the weight. Hopefully 30 feet will give us Internet throughout. I,suspect the antennae are too close together and the booster is turning power down.
Anyways I wanted to comment from the cabin, because you helped make it possible! Thank you! Brendan, EMT conduit is "meant" to bend easily and around corners, so I doubt it would standup well to the elements. Possible applications include micro surgery on the level of individual cells , utility fog , [] manufacturing, weaponry and cleaning.
A few researchers have investigated the possibility of creating robots which can alter their physical form to suit a particular task, [] like the fictional T Real robots are nowhere near that sophisticated however, and mostly consist of a small number of cube shaped units, which can move relative to their neighbours. Algorithms have been designed in case any such robots become a reality.
In July scientists reported the development of a mobile robot chemist and demonstrate that it can assist in experimental searches. According to the scientists their strategy was automating the researcher rather than the instruments � freeing up time for the human researchers to think creatively � and could identify photocatalyst mixtures for hydrogen production from water that were six times more active than initial formulations. The modular robot can operate laboratory instruments, work nearly around the clock, and autonomously make decisions on his next actions depending on experimental results.
Robots with silicone bodies and flexible actuators air muscles , electroactive polymers , and ferrofluids look and feel different from robots with rigid skeletons, and can have different behaviors. Inspired by colonies of insects such as ants and bees , researchers are modeling the behavior of swarms of thousands of tiny robots which together perform a useful task, such as finding something hidden, cleaning, or spying. Each robot is quite simple, but the emergent behavior of the swarm is more complex.
The whole set of robots can be considered as one single distributed system, in the same way an ant colony can be considered a superorganism , exhibiting swarm intelligence. Whereas one large robot may fail and ruin a mission, a swarm can continue even if several robots fail.
This could make them attractive for space exploration missions, where failure is normally extremely costly. Robotics also has application in the design of virtual reality interfaces. Specialized robots are in widespread use in the haptic research community. These robots, called "haptic interfaces", allow touch-enabled user interaction with real and virtual environments.
Robotic forces allow simulating the mechanical properties of "virtual" objects, which users can experience through their sense of touch. Robots are used by contemporary artists to create works that include mechanical automation. There are many branches of robotic art, one of which is robotic installation art , a type of installation art that is programmed to respond to viewer interactions, by means of computers, sensors and actuators. The future behavior of such installations can therefore be altered by input from either the artist or the participant, which differentiates these artworks from other types of kinetic art.
The first reference in Western literature to mechanical servants appears in Homer 's Iliad. They looked like real women and could not only speak and use their limbs but were endowed with intelligence and trained in handwork by the immortal gods.
Rossum's Universal Robots written in ". Possibly the most prolific author of the twentieth century was Isaac Asimov � [] who published over five-hundred books. Later, Asimov added the Zeroth Law: "A robot may not harm humanity, or, by inaction, allow humanity to come to harm"; the rest of the laws are modified sequentially to acknowledge this.
Asimov was not initially aware of this; he assumed the word already existed by analogy with mechanics, hydraulics, and other similar terms denoting branches of applied knowledge. Robots appear in many films. Most of the robots in cinema are fictional. The concept of humanoid sex robots has elicited both public attention and concern.
Opponents of the concept have stated that the development of sex robots would be morally wrong. Fears and concerns about robots have been repeatedly expressed in a wide range of books and films. A common theme is the development of a master race of conscious and highly intelligent robots, motivated to take over or destroy the human race.
Frankenstein , often called the first science fiction novel, has become synonymous with the theme of a robot or android advancing beyond its creator. Some fictional robots are programmed to kill and destroy; others gain superhuman intelligence and abilities by upgrading their own software and hardware.
The game Horizon Zero Dawn explores themes of robotics in warfare, robot ethics , and the AI control problem , as well as the positive or negative impact such technologies could have on the environment. Another common theme is the reaction, sometimes called the " uncanny valley ", of unease and even revulsion at the sight of robots that mimic humans too closely.
More recently, fictional representations of artificially intelligent robots in films such as A. Artificial Intelligence and Ex Machina and the TV adaptation of Westworld have engaged audience sympathy for the robots themselves. From Wikipedia, the free encyclopedia. This article is about mechanical robots. For software agents, see Bot. For other uses of the term, see Robot disambiguation.
Machine capable of carrying out a complex series of actions automatically. Main article: History of robots. Further information: Robotics. See also: Glossary of robotics. Main articles: Mobile robot and Automated guided vehicle. Main articles: Industrial robot and Manipulator device.
Main article: Service robot. Main article: Educational robotics. Main article: Self-reconfiguring modular robot. Main articles: Roboethics and Ethics of artificial intelligence. Main article: Technological unemployment. See also: List of robots. Main article: Autonomous robot.
See also: Dirty, dangerous and demeaning. Main article: Military robot. Further information: Disability robot. Main article: Pharmacy automation. This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed.
July Learn how and when to remove this template message. See also: Robotics research. Further information: Biomimetics. Further information: Bionics.
Further information: Nanorobotics. Further information: Laboratory robotics. Main article: Swarm robotics. Further information: Haptic technology. Further information: Robotic art. See also: List of fictional robots and androids and Droid Star Wars.
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