Wireless Access Sample Solutions

Rfwel Engineering is an Arizona Registered Engineering firm Reg#17227 and a Licensed Low Voltage Communication Contractors [Commercial]: ROC#322820 specializing in helping clients in various industries design, install, and maintain wireless systems and solve complex signal coverage problems. This includes designing custom wireless links for backhaul of remote system data such as for controlling or monitoring of remote IoT sensors and terminal units. As part of our total solution promise, we supply the infrastructure equipment including enclosures, power solutions, mounts, cabling, and more. Learn More

Medium Range Wireless Bridging Solutions

NOTES:
	These applications pertain to situations where you need to extend your WLAN or Internet access outside the range of 802.11b/g/n radios i.e greater than ~500ft (150m) to about 3500ft (~1km) and at high datarate ~10mbps or more. See below for long range links > 1mile.
	802.11n radios on the right channel will easily give you in excess of 300FT of coverage. Before spending money on costly bridges investigate whether you could boost the performance of your existing system (you often can using directional antennas, amplifiers, power-line adapters etc.) Learn More
	Lighting surge suppression devices critical if mounting antenna in roof. Appropriate lightning device properly grounded in accordance with NEC or other applicable local regulations STRONGLY recommended more on lightning devices
	Do be a good neighbor and observe FCC EIRP (Effective Isotropic Radiated Power). Where possible utilize high directivity antennas to reduce chances of interfering with other neighboring unlicensed band devices.

Drawing Link	Brief Description
	Point-to-Point Bridge & Wireless Distribution System
	Amplifying WiFi + Long-Range WiFi USB Adapter
	Converting Cellular to WiFi then Bridging Distant Site Useful to share cellular 3G/4G Internet connection with another LAN client is a remote location. Easier to condition the cellular signal once (i.e to amplify it if weak) then distribute 802.11b/g/n WiFi as opposed to trying to distribute the boosted cellular signal.
	Medium Range (<1km) Point-to-Point Link with WiMax Backhaul Convert 4G WiMax to a wireless PtP link using 5.8GHz radios. Useful in backhauling data from a remote location.
	Remote location Wireless Internet Bridging To extend a WLAN (WiFi) or LAN network to a remote location up to 3000ft away or to get Internet to a remote location. One location has DSL/Cable modem but remote location doesn't. Long ranges above 500ft require a line of sight for best performance. To avoid 2.4GHz interference consider using 5.8GHz radios for the Point-to-Point (PTP) link. Minimize coaxial cable runs to high gain antennas.
	Large Coverage WiFi System Setup Uses high-power access point, high gain antennas and 2.4ghz amplifiers to extend WiFi coverage.
	900MHz Bi-Directional Amplifier for FHSS/DHSS and other radios Particularly useful for SCADA applications. Boost the 900MHz radio signal and use a high-gain directional Yagi antenna to aim signal to partner radio.

Long Range Wireless Bridging Solutions

NOTES:
	By long range we mean > 1mile to several miles. Depending on desired data-rate, available frequency band and available line-of-sight, 50+ miles possible with tens of mbps and decent fade margin. Setting up a long-range wireless link is not a trivial exercise especially if using an unlicensed frequency band and trying to push throughput.
	RF line-of-sight (LOS) is not the same as optical line-of-sight. You could have an optical line-of-sight and still not have RF LOS if there are obstructions in the Fresnel Zone (and Fresnel zone depends on wavelenght/frequency of signal). Non-line-of-sight (NLOS) and near-line-of-sight (nLOS) links possible but at reduced datarate Learn More
	Typically the higher the frequency band the more the available bandwidth hence the higher the possible datarate (simplest form is bound by shannon channel capacity proportional to the Bandwidth and log of SNR). So millimeter wave (MMW) at 60GHz allows for better datarate than 5.8GHz or 900MHz but since the beamwidth is much smaller it requires more careful alignment and since wavelength is much lower more susceptible to rain fade.
	Typically the higher the frequency band the more the available bandwidth hence the higher the possible datarate (simplest form is bound by shannon channel capacity proportional to the Bandwidth and log of SNR). So millimeter wave (MMW) at 60GHz allows for better datarate than 5.8GHz or 900MHz but since the beamwidth is much smaller it requires more careful alignment and since wavelength is much lower more susceptible to rain fade.
	Contact us for your custom system design.

Cellular Indoor Coverage

WiFi Indoor Coverage

Other Coverage Solutions

Indoor Coverage

Vehicle Data

Wireless Access

Infrastructure

Wireless Video

Interoperability

Wireless Access Drawings

Point-to-Point Bridge & Wireless Distribution System

Amplifying WiFi + Long-Range WiFi USB Adapter

Converting Cellular to WiFi then Bridging Distant Site

Medium Range (<1km) Point-to-Point Link with WiMax Backhaul

Remote location Wireless Internet Bridging

Large Coverage WiFi System Setup

900MHz Bi-Directional Amplifier for FHSS/DHSS and other radios