Antenna Handbook

Best Cell Phone Booster for Car, Home, Office, Mobile, and Marine for Rural Areas

What are the Best Cell Phone Signal Boosters for Rural Areas? - No matter where you’re located — or where you’re going — Cell Phone Signal Boosters for Home, Work and Travel  can help make sure you have the coverage you need.


We picks 3 Best Brands for  Cell Phone Booster for Home, Office, and Travel


SolidRF mission is to help increase your cell phone signal and keep you connected to the important things in your life. Since 2005, SolidRF have been creating cell phone signal boosters for homes, offices and vehicles.


There’s no one-size-fits-all cell phone signal booster. When choosing the right one for your needs, you’ll need to weigh a few important things. Start by considering where you’ll install your booster. How many square feet do you need coverage for? Is it a large space (like an office building) or a small one (like your family cabin)? If you’ll need coverage for a large space, you’ll need a more powerful booster.

Next, consider your existing signal strength. Are you miles from the nearest cell phone tower? (If you’re not sure, there are many resources out there that can help you find the nearest cell phone tower online.) You’ll also want to make sure that you have an accurate reading of the signal strength in decibels (dBM). 
If your phone isn’t getting a strong signal, you’ll need a more powerfull booster.

Best Sellers Signal Booster

Don’t know where to start? Browse this overview of Signal Booster best sellers to find the most common kits that fit with you. 


Works  for Verizon, AT&T, T-Mobile, Sprint | Dual Interior Antennas Kit Cell Phone -Booster Up to 8, 000 sq ft. 



Works with all U. S and Canada Carriers: Verizon, AT&T, Sprint*, T-Mobile, Straight Talk, U. S. Cellular ,  u.s. Cellular, bell, telus, rogers, fido, sasktel, mts, etc across north america.


Booster


High gain. Up to 70Db, which means you can pick up a weak signal over a long distance. Enhances the signal up to 1000X, with a coverage area of 5, 000 sq ft. and up. (Note: coverage area range depends on the outdoor signal level: 1-2 bars (-100dBm) ~1, 000 sq ft., 3-4 bars (-90dBm) ~3, 500 sq ft. , 5 bars (-80dBm) ~8, 000 sq ft. )


Dual Interios Antennas



Provides two zones of coverage in any size home or office. This is the best solution especially if the target coverage area is a two-story building, or if the internal building can't be covered by one antenna because of building materials that block cell signal (plaster, concrete, metal, UV-coated glass, etc.)


Log periodic antenna

Powerful outside directional antennas, pick up weak signal over long distance, maximum communication distance range up to 3~5 miles.

Coverage 

Dual Antennas and Double coverage, Dual interior antennas for multiroom coverage in buildings and home offices. Stop walking around to find a stronger signal. Never experience a dropped or missed call again. Enjoy crystal-clear phone calls and superfast data speeds.


Two Key Factors
The size and the coverage area and the strength of the boosted signal are directly related to two key factors:

1.Signal strength received by the outdoor unit. So, setting up the outside antenna where the signal is the strongest will provide the best results.

2.Distance of separation between the outdoor antenna and the indoor unit.


Boosts voice, text and data signals. The perfect cell phone signal booster if you are located very far away from the nearest cellular tower, or if your building materials get in the way of a strong signal. SolidRF customers often purchase this booster when they have metal roofs on their homes or businesses, or for warehouses with poor reception.


Better voice quality, faster uploads and downloads. No more slow internet connections or long buffer times while watching your favorite streaming to shows and movies. Give your smartphone, tablet, data card and notebooks boosted speeds all at the same time.


Coverage Ability 

Coverage Up to 8,000 Sq Ft


Outdoor Signal Level 4~5 Bars(-80dBm)
Coverage up to 8,000 sq ft, suitable for 2 story building, or big size office/warehouse with open space.

Outdoor Signal Level 2-3 Bars(-90dBm)
Coverage up to 4,000 sq ft, suitable for 2 story house, or middle size office with multi-room.

Outdoor Signal Level 1 Bar(-100dBm)
Coverage up to 1,000 sq ft, suitable for 2 story home, or small offices and workplaces with multi-room( Caution: Not recommend when outdoor signal less than -100dbm).




With up to 65 dB Max gain, the 10K Smart Link Cell Phone Signal Booster amplifies the outdoor signal and delivers powerful signal strength to a large coverage area. 

It is an ideal solution for users to cover areas up to 10,000 square feet.


Who is 10K Smart Link for?
For a medium to large home/office size (4,000 to 10,000 sq ft).
Good for: Multi rooms or midium to large homes.
Not recommended for: needing whole building coverage above 10K sq ft
Effective coverage area depends on the quality of outside signal strength

10K Smart Link Cell Phone Signal Booster allows you to customize your own signal coverage area. Add an extra indoor panel antenna to extend signal coverage 
for multiple layers and more rooms.

How It  Work 

1. The outdoor antenna picks up the signal from the nearest cell tower and sends it to the booster.

2. The booster amplifies the signal and transmits it to the indoor panel antenna.

3. The indoor panel antenna broadcasts the enhanced signal throughout the desired area.



4. This is the moment! Your mobile phone receives a strong signal and you enjoy seamless calls and data! With up to +65 dB gain of amplification, the signal amplifier improves 3G & 4G LTE signals for all your wireless devices. Stronger cellular connectivity  allows you to enjoy clearer calls and faster internet!




As Cel-Fi company motto "Solving wireless communication challenges for any environment", The Cel-Fi product line offers the best solutions for addressing poor public safety communication and cellular coverage in enterprise, business, IoT, 
remote, residential, and mobile environments. 

The Cel-Fi GO G32 (GO+) Smart Signal Booster line is the first carrier-class cellular coverage solution to feature an industry leading system gain. Artificial 
intelligence and Nextivity’s award-winning Intelliboost signal processing deliver the industry’s best voice and data wireless performance. It’s guaranteed to be 
unconditionally network safe and does not interfere with other wireless devices. Cel-Fi GO is NEMA 4 rated and will withstand harsh conditions including dust and 
water exposure.

Mobile Mode: Industry Leading Gain
Up to 100 dB (depending on region) gain. This is over 1000 times stronger than any competitor. Nextivity’s award-winning Intelliboost signal processing 
leverages artificial intelligence to deliver for mobile subscribers on the move.


Indoor / Outdoor NEMA 4 Rating
Industrially designed for harsh conditions, enables the device to support weather conditions that include water, dust and dirt.


Stationary Mode: Industry Leading Gain
Up to 100 dB globally (1000x), delivering the industry’s best voice and data wireless performance and the industry’s largest coverage footprint.


3G/4G/5G Multi-Carrier Support with Carrier Switching
Select your network operator/carrier from the Cel-Fi WAVE app.

Cel Fi Go Smart Signal Booster line is the first carrier-class cellular coverage solution to Stationary , Vehicle, RV and Trucker, and Marine Cellular SIgnal Solutions



The Cel-Fi GO G32 (previously Cel-Fi GO X) Indoor/Outdoor solution is ideal for use in commercial properties, government buildings, small manufacturing operations, agricultural settings, rural areas, IoT applications, businesses and large homes for up to 15,000 ft2 per system (1,500 m2). A variety of Cel-Fi donor and server antennas can be used based on environmental needs.


Ready for the highway, but need to stay connected? The Cel-Fi GO G32 (previously Cel-Fi GO M) features two of the best-performing antennas in their 
footprint on the market. These antennas are outdoor wideband cellular omnidirectional antennas with up to 4 dB gain. The weather-resistant IP67 plastic 
casings are built to securely attach to autos, trucks, vans, and SUVs.

Ready to hit the road or plan to connect in remote areas? The Cel-Fi GO G32 (previously Cel-Fi GO M) features the Cel-Fi Trucker Antenna, that was developed 
by Nextivity to offer a high-performance wideband antenna option for over-the-road (OTR) users. The product features a heavy-duty spring base and includes a 
ladder or mirror-mount for easy installation.

All aboard, as being on the water shouldn’t mean losing your connection. The Cel-Fi GO G32 (previously Cel-Fi GO M) combined with the industrial Cel-Fi Marine Antenna, that will connect to cell towers along the coast. The product features a heavy-duty marine casing and includes a pole mount for easy installation.


Cel Fi Go X Specifications

More Coverage 


Up to 2X more sq. ft. coverage compared to the average all-carrier cell phone booster.


More Power

+30 dB gain (1000x) for home and +20 dB gain (100x) for car compared to the competition.

Better Monitoring 


Cel-Fi Wave App allows for remote monitoring, carrier-switching, and easy installation.

Best Long Range indoor and outdoor tv antenna for rural areas




Best Outdoor TV Antennas for rural areas - When testing Best outdoor TV antenna for rural areas there are some key factors you must consider. In this article we will look at these key factors and review what we think are the best TV outdoor antennas for rural areas.

So what are the best outdoor TV antennas for rural areas? To save you time, here are the 3 best outdoor TV antennas for rural areas we tested.

3. Channel Master CM-3020 Long Range HDTV Antenna
For a more comprehensive review of each, continue reading.

TV Antennas for Rural Areas – Key Factors

Picking up reliable OTA TV signals in rural or “fringe” areas can sometimes be challenging for several reasons.

Often times you live at a distance greater than 60 miles for the nearest broadcast tower.
You are often surrounded by trees or other obstructions such as hills and valleys.
Antenna cable run needs to be long.
All of these factors can have a severe impact on the quality and reliability of the antenna signal you receive. The question is, how can we fix it? To minimize the issues relating to distance, obstructions and cable runs lets look at some strategies to consider when planning your installation.

TV Antennas for Rural Areas – The Right Antenna
When it comes to rural areas and choosing the right antenna bigger really is better. There are a lot of antennas on the market that are small and stylish.

These antennas claim to get distances of 70+ miles but I will tell you that these are theoretical distances under ideal conditions.

In general, a rural area or a countryside is a geographic area that is located outside towns and cities. Whatever is not urban is considered rural ?
Typical rural areas have a low population density and small settlements. Agricultural areas and areas with forestry typically are described as rural.
Some rural areas have flat land contours, with meadows, and hills and forests, some rural areas also have up and down land contours. and usually in rural hills locations there were Repeaters TV stations to reach their broadcasts to the public.
So to choose an indoor antenna, choose an antenna with a large enough gain.
We have selected several indoor antennas that are suitable for rural areas and can be your consideration before buying them.

Our Best Long Range indoor tv antenna for rural areas




8 Element Bowtie HDTV Antenna with 70 Mile Range, The DB8e Bowtie antenna has an unsurpassed gain of 17.4 dBi making this the most powerful antenna in the world! Utilizing patented technology to receive TV signals 70 miles away, the specially designed brackets allow the two panels to target broadcast towers in multiple directions. The DB8e is ideal for rural areas where heavy foliage or roofing materials reduce the incoming signal. No other extreme range bowtie antenna can match its performance.


Installed in Indoor, Attic and Outdoor. This multi-directional antenna features patented elements and specially designed brackets which allow the two panels to turn in different directions to target widely-spaced broadcast towers.


 The reflector focuses the antenna's power for added range and also provides protection against multi-path interference No other bowtie antenna can match this powerful performance in such a compact form Ideal for rural areas where heavy foliage or roofing materials can reduce the incoming signal Includes adjustable mounting hardware Mast and coaxial cable sold separately Range 70+ Miles. 



ClearStream 4MAX Complete Amplified antenna. Receive signals 70+ miles away with long-range, multi-directional UHF and VHF reception. 

Boost signal strength with the included Jolt 15dB USB in-line amplifier to provide signal amplification for efficient turning - the result is a clean, clear signal to your TV. The amplifier includes a USB cable to connect directly into the USB port on your TV so the amplifier will only draw power when the TV is turned on, eliminating power consumption. If you don’t have a USB port on your TV, use the USB power adapter with any standard wall outlet.  




The 20-inch mast includes a pivoting base to install the antenna on horizontal and vertical surfaces. The 30-foot detachable coaxial cable is made using copper-coated steel with a high-capacity center conductor and a larger insulating dielectric that allows you to expand the mounting options for your antenna while providing you with the highest-quality picture available. With the 3-way splitter, split over-the-air signals to three TVs with 1-input and 3-outputs.  Ideal for rural areas.






Best Clearstream TV Indoor Antenna Reviews

TV antennas indoor and outdoor  receive over-the-air (OTA) network TV signals for FREE from major networks or broadcast tv stations such as NBC, FOX, CBS, ABC, PBS, THE CW, QUBO, TELEMUNDO, UNIVISION, RTV, THIS TV, ION, ME TV, the weather channels and SO MUCH MORE according networks in your area or countries , with free of charges and  no subscription or monthly fees. The range for pick up signal of a TV antenna will vary greatly depending on the height of antenna installation position , power dB of antenna , and frequency of the antenna UHF or VHF and both UHF/UHF, coming from the TV stations transmitting tower, as well as the height of the antenna installation, the terrain, and the number of obstacles between your home and the transmitting TV stations tower.




Set up is easy! Includes uniquely formulated strip to peel & stick this antenna to any smooth surface, no hooks, Velcro, or damage to your walls. 
This antenna is multi-directional, low-profile, and the reversible black or white design is paintable! Perfect for compact living spaces, dorm rooms, RVs - take your TV antenna anywhere! Includes 12 ft. of detachable high-performance coaxial cable. 

Range: 35+ Miles

How to get free TV channels without Antenna ?


Television is receiver device that needs antenna to receive signal from broadcast TV stations. Free TV channels or Aerial Signal TV channels is free. Instead of cable TV channels that charge you monthly bills. 

And with Indoor TV Antenna or Outdoor TV Antenna Can pull in all of your local news, weather, sitcom, kids and sports programming without extra money. Including NBC, FOX, CBS, ABC, PBS, THE CW, QUBO, UNIVISION, RTV, THIS TV, ION, ME TV and the weather channel.

You only needs to buy ones TV Antenna around 30 - 150 dollars , no more monthly bills with Indoor or Outdoor TV Antenna.

No more triple-digit monthly bills! can save you 80-212 dollar every month, adding up to 60-2544 dollar a year!

Omnidirectional Antenna

The Omnidirectional antenna is probably the most common antenna available. Just about every Wi-Fi device you can buy comes with an omni antenna. This is because the omni is so easy to set up, and generally works in consumer environments without much planning . There are few different types of omni antennas. Omni signals spread out sideways , but not vertically.

Top view of coverage an Omni Antenna

An omni antenna sends and receives signals equally in front, behind , to the left , or to the right of the antenna. However, when you go above or below the antenna, signal strength drops off significantly. The trade-off you make when choosing a high-gain antenna is this focusing, or thinning, of the above and below energy. The low-gain omni works better vertically than a high-gain omni, but it won't extend as far horizontally. The omnidirectional antenna sends and receives signals in all directions equally. This is generalization , but it's mostly accurate.

Side view of an omnidirectional antenna signal

Even though an omni antenna does not work very well above and below, it is not considered a directional antenna. Wi-Fi antennas are generally rated in two-dimensional space that assumes it is mounted parallel to the Earth's surface. Knowing how the beam is shaped, and that an antenna is not truly omnidirectional will help you choose the right antenna for your Wi-Fi.

(source : Wi-Fi Toys Extreme Tech)

Building A Classic Paper Clip Antenna

This article will show you how to put together the ultimate homebrew antenna -- a working Yagi antenna for 2.4 GHz Wi-Fi out of litle more than paperclips stuck together. This model is commonly called the Frisko antenna , after the French Frisko brand of ice cream cups whose wooden spoons were used in the first prototypes. 


The current designs of most external Wi-Fi cards put the antenna in a lawed position, with the antenna very close to the computer. This means that the pattern of emissions is often blocked by computer itself. Not only that, the small packaging of wireless cards prevents an optimal design for the internal antenna to pick up wireless network devices more than a couple of 100 feet away.

This is one of the reasons that attaching even a small external antenna can greatly improve signal strength, especially if it is oriented properly.

Dipole Antenna you will build in this article is folded dipole . The Dipole antenna is just the the simplest antenna. The dipole is a half wave antenna that consists of two opposing radiating elements. It's made up of two quarter-wavelength poles that are not connected to each other and fed in the middle by the transmission line. A standard dipole is open on each end, but it can also be folded over on itself.

The Antenna design shows a simple dipole made from steel paperclips . Each arms of the dipole is 31 mm in length, or 1/4 of a wavelength for Wi-i channel 6. The center conductor is soldered to right arm, while the shield is soldered to the left arm. It doesn't matter to which side you solder. 


The dipole antenna is unique in that it can be mounted vertically or horizontally. When standing vertically, the dipole antenna is omnidirectional. When horizontal, this antenna will radiate outward in two directions off the sides (and slightly upwards), like turning a donut on its edge.

(source ; Wi-Fi Toy Extreme Tech)

Adding A Driver / Amplifier for Increased Output Power


Addition o an RF power stage that you can use to extend your communications range. This part of the transmitter is arranged for class-A linear service. 

Although it is not necessary to use a linear amplifier for CW or FM amplification, there are some advantages : (1) a linear amplifier produces a lower level of harmonic currents; (2) it is easier to drive when a low-power stage is used to excite it. (3) the keyed waveform of the overall transmitter is less clicky than when using a class C amplifier after the keyed stage.

The Output power from Q2 is approximately 1 watt. This level of power will enable you to work DX when band conditions are good.

(source : W1FB Design Notebook)

150 mW CW Transmitter Circuit

A Schematic diagram of A 150 mW CW transmitter, Fixed value capacitors are disc ceramic , 50 V or greater , Resistors are 1/4 or 1/2 watt carbon film or carbon composition, C1 and C2 are feedback capacitors , C3 is a 10-100 pF ceramic or mica compression trimmer. 

A two circuit phone jack is used for J1 and an RCA phono connector or SO-239 coax connector may be used for J2, L1 is a 2.3 uH toroidal inductor. Use 24 turns of no. 26 enamel, wire on an Amidon T37-6 toroid core or other brand. L2 has three turns of no. 26 enamel, wire wound over the +12 V end of the L1 winding. 

Q1 is a 2N4400 or 2N4401 or equivalent transistor . A 2N2222A may be substituted, but will deliver less output power . Y1 is a fundamental crystal, 30 pF load capacitance.

(source : W1FB Design Notebook)

Broadband Antenna with reflector

In Yagi antennas, reflector antennas and in-phase excited antennas are suitable for amateur production.

a) Broadband dipole with angular reflector and broadband reflector
Due to the large feedback factor, this antenna is (Fig. 160) Suitable for places with a medium and strong signal, disturbed by reflections from rearward direction, ie especially to urban districts with height segmentation development. The radiation diagram in Fig. 160c applies to the frequency 730 MHz, at which this antenna has the highest gain. The return factor is in the whole scope IV. and V. television band almost uniform. The electrical parameters are shown in Fig. 161. Fig. 162 is a view of the actual embodiment antennas with angled reflector.

b) Excited full-wave floor system for channels Nos. 21 to 81



This antenna (Fig. 163) is very suitable for amateur construction, because is not as demanding on accuracy as Yagi antennas and always gives good results. The reflector wall can be either made of mesh with a mesh size 20 X 20 mm (Fig. 163a), or can be made according to Fig. 163b


In both cases, however, all the wires crossing each other are necessary solder with tin or tin the whole reflector wall in fire (galvanic tinning is not enough). The electrical values ​​are almost equal in the whole band


specific (see also Fig. 171). The antenna is also suitable for places with inhomogeneous ones field, is significantly less sensitive to the quality of the incident field than antennas Yagi type.


The gain of an excited whole-wave floor system can be maintained while maintaining the basic
increase by about 2 dB by adding a series of directors to each emitter (Fig. 164). Director carriers are threaded at both ends, enabling easy installation even in an already finished antenna.



A further increase in gain is achieved by arranging four antennas in the system (Fig. 165). The spacing of the antennas in the axis of the system is chosen so that the distance between individual emitters was constant. The reflectors of these antennas therefore overlap, it is advisable to shorten them accordingly. It is advisable to merge the antennas in series with a parallel connection .


(source : translated from Anteny by Tomas Cesky)

A Strobe flasher for bike indicator

Simple circuitry allows the project to be built at low cost in a lightweight, compact
package that can be secured to the bicycle or the rider's belt. 
The light from this circuit uses a xenon tube to generate a bright flash that can be
seen from a great distance - but is not intense enough to destroy a driver's night vision.

Circuit 



Parts Lists

Build your own this low cost analog capacitance meter


When a capacitor is connected to a constant-voltage source through a resistor, the charge on the capacitor increases exponentially. If the source supplies a constant current, however the charge on the capacitor increases linearly. This linear charging principle is used here in the design of capacitance meter which will measure values outside the range of most such meters. 

By using a constant-current source, the meter determines the time it takes to match the charge on the unknown capacitor to a known reference voltage. The meter has five full scale range o 1, 10, 100, 1000, and 10,000 uF.on the 1-uF scale , values as small as 0.01 uF can be read easily.

The Circuit 
 




Power Supply




Parts List



PCB Layout



Component Layout 



Prototype:


source :  Electronic Experimenters Handbook 1980 edition 

White LED Lamp Circuit

Make  this  solid-state pocket torch using a few of these white LEDs. The simplest approach is naturally to use a separate series resistor for each LED, which has an operating voltage of round 3.5 V at 20 mA. Depending on the value of the supply voltage, quite a bit of power will be lost in the resistors. 

The converter shown here generates a voltage that is high enough to allow ten LEDs to be connected in series. In addition this converter supplies a constant current instead of a constant voltage. 

A resistor in series with the LEDs produces a voltage drop that depends on the current through the LEDs. This voltage is compared inside the IC to a 1.25 V reference value, and the current is held constant at 18.4 mA ( 1.25V devided by 68Ohm)
The IC used is one of a series of National Semiconductor 'simple switchers'. The value of the inductor is not critical; it can vary by plus or minus 50 percent. 220 uH coil at 3.5 A is good choice. Almost any type of Schottky diode can also be used, as long as it can handle at least 1 A at 50 V. The zener diodes are not actually necessary but they are added to protect the IC. If the LED chain is opened during experiments, the voltage can rise to a value that the IC will not appreciate.

Circuit


PCB Layout



Component Layout



Parts Lists


source ; Elektor 

Free Energy : Centrifugal dynamic power generating system using a lever structure Patent

This patent of Centrifugal dynamic power generating system using a lever structure invented by Daniel Paul Gorney. 

The free energy concept is the system/machine that operate perpetual motion indefinitely and independently without any other source of fuel, electricity, or any other renewable energy source other than gravity energy.

The free energy magnitude is over unity concept. the free energy result must bigger than energy for running the system/machine itself.
                                                                                                                                       

DC Millivoltmeter with IC OP AMP 741

The Design of this DC Millivoltmeter presented here is a sensitive dc. electronic meter of several Megaohms input resistance and covering range from 5 Volt f.s.d to 5 mV f.s.d. 

This D.C. voltmeter designed to be used with 1 mA meter movement, this unit can be used as a pre-amplifier for a conventional test meter when switched to its 1 mA range for 5 V range. The range of meters from 5V f.s.d ,0.5V, 50mV, and 5mV f.s.d are provided, with input several Mega Ohm.


Best Long range 990 miles hd 1080p outdoor amplified hdtv digital tv antenna long range vhf uhf ?

Is it possible to get 990 miles or 1500 km  amplified outdoor antenna  from Broadcast TV stations ? The answers it is depends , if the broadcast stations have many repeaters it is possible for you to received from the long range TV stations , but you don't need 990 miles amplified antenna for this. And also there is no antenna in the market with 990 miles amplified Antennas with a gain of 990 miles are not available in the market and are very difficult to manufactured.

The antenna in the range 50-300 miles it is enough  with reasonable price, more gain in dB and more elements.  because the TV stations have repeaters.

So the choice is an antenna to receive long distances between 50-300 miles plus an amplifier.

I have selected 5 of the best antennas and amplifiers or boosters for this purpose, so can be your reference before you buy it.