Solutions by Industry

Remote Irrigation Control Solutions

Remote irrigation control Raveon is a leader in wireless control for irrigation.  Many of our standard products, such as the FireLine wireless modem (RV-M5) and the low-cost MURS band OEM module (RV-M3) are perfect for remote irrigation control, monitoring, and last-mile links to your irrigation system.

Raveon’s M7 Series of high-speed UHF data radio transceiver increase data throughput in narrow-band wireless systems.  High-speed over the air data (up to 19.2K) and long-range (up to 50 miles with omni antennas)  make it an excellent choice for irrigation control.  Included in each unit, are advanced networking, error correction, and diagnostics.  It may be ordered with an IP65 weatherproof enclosure.  And because it is the only radio modem built using rugged “single-board” construction, it is extremely tough – and cost effective.

With prices starting below $400 the M7 is the most powerful, most economicaldata radio modem available, and is ideal for remote control and pivot irrigation.

Raveon’s Wireless Modem Product Features

  • RS232, RS422, and RS485 serial interfaces
  • Range of 5-50 miles
  • Operates on licensed UHF and VHF radio channels
  • Easy to use with built-in smart data radio modem. Data In = Data Out.
  • Works with MODBUS, DNP, and most serial SCADA protocols.
  • Powerful 5 watts of RF output (programmable down to 1/2 watt)
  • Ultra-fast T-R switching time of 3mS
  • Store-and-forward repeater capability
  • Optional Weatherprrof enclosure

Products for the Irrigation Industry

M7 Wireless Modems

M7s Series Wireless Modems

Ideal for remote control applications, the M7 series of products features: 1/2-5 watts of RF output in the 450-480MHz (other bands available), range of 5-50 miles, ultra-fast T-R switching time of 3mS, store-and-forward repeater capability, remote “Ping” capability, voltage, temperature, and current monitoring, and RS232/422/485 interfaces available.  Perfect for SCADA, remote control, telemetry, mobile-data, andAVL applications.

More Info…

VHF Wireless Modem

M5 VHF Wireless Modem

Raveon’s RV-M5 FireLine series of data radio modems are a high-speed FCC refarming compliant data radio designed for telemetry, wireless data, GPS, and remote control applications.

More Info…

weatherproof wireless modem

M7 WX Weatherproof Wireless Modem

The M7 WX is the weatherproof version of Raveon’s M7 wireless modem. It isIdeal for remote control applications, the M7 series of products features: 1/2-5 watts of RF output in the 450-480MHz (other bands available), range of 5-50 miles, ultra-fast T-R switching time of 3mS, store-and-forward repeater capability, remote “Ping” capability, voltage, temperature, and current monitoring, and RS232/422/485 interfaces available.

More Info…

Moduleremote

Let Raveon design and manufacture your wireless product for you.

When nothing standard will work, or the cost of your current solution is to high, let Raveon design and produce a wireless product for you.  You will get a product that does exactly what you want it to do, looking like you want it to, and in the perfect size and shape.  And our custom products are often lower-cost than other company’s off-the-shelf products!  Raveon manufactures lower-volume products in the USA and higher-volume in Asia, giving enormous flexibility on scheduling and pricing.

More Info…

Asset Tracking Transmitters and Hardware

assets imageRaveon’s new RavTrack series of GPS Tracking transceivers have built-in GPS and are the fastest real-time tracking radios in the industry.

See: www.ravtrack.com for more information on Raveon’s complete Real-Time GPS Tracking system.

 

Products for GPS Tracking of Assets, Vehicles, and Personnel

Asset tracking transmitters

ATLAS PL Personal Locator

The Atlas PL is part of Raveon’s RavTrack GPS tracking technology. With built-in UHF and GPS antennas, rechargeable battery, position sensor, and alert button, the ATLAS PL is ideal for tracking personnel in mission-critical circumstances.

It is compatible with the M7 GX transponder and RavTrack PC AVL software.

For privacy and security, over-the air encryption is standard on every Atlas PL. For network versatility, the Atlas PLincorporates a 16-bit identification code, allowing up to 65,000 to be identified in one system.  For wide-area coverage, all Atlas PLs may be set to store-and-forward messages from other RV-M7 or from other Atlas PLtransponders.

More Info…

M7 GX GPS Transponder with Trimble GPS

M7 GX GPS Transponder

For truly turn-key asset tracking system, the -GX option for the M7 radio modem incorporates a built-in Trimble GPS into the radio.  The M7 model M7 GX is the easiest-to use UHF GPS tracking radio made.  Featuring NMEA output compatible with most plotters and hand-held GPS units that have serial NMEA inputs, the unit is able to report its position and status (voltage, temperature, speed, direction…) in less than 50mS. Using its built-in TDMA channel access method, a system built with M7 can track up to 20 units with 1-second updates, 300 units with 15 second updates. or up to 9999 units with updates as fast as every 15 minutes.

M7 WX Weatherproof GPS Transponder

M7 GX WX Weatherproof GPS Transponder

The WX version of Raveon’s GPS transponder is housed in a weatherproof enclosure. For more details, visit the M7 GX WX product information page on Raveon’s GPS Tracking website.

When nothing standard will work, or the cost of your current solution is too high, let Raveon design and produce a wireless product for you.  You will get a product that does exactly what you want it to do, looking like you want it, and in the perfect size and shape.  And, our custom products are often lower-cost than other company’s off-the-shelf products!  Raveon manufactures lower-volume products in the USA and higher-volume in Asia, giving enormous flexibility on scheduling and pricing.

Visit Our Custom Wireless Solutions page for more information.

Firefighter GPS Devices

Raveon manufactures a line of GPS devices to protect the lives and safety of peple in remote and dangerous areas. Firefighters have a very difficult and dangerous job, and deserve the best communication possible. Voice communications is often a huge challenge in wild-fire fighting, and Raveon’s Atlas GPS transponder can provide an additional level of safety and security to the brave men and women who respond to the challenge of wild-fire fighting.

Here is an article about why not to rely soley on a two-way voice radio for safety and GPS tracking.
<Why Use GPS Trackers>

See all of Raveon’s GPS tracking products on our GPS Tracking website here: www.ravtrack.com.

personal GPS tracking radio

Atlas PT

The Atlas PT is a military grade personal GPS transponder that provides command and control with immediate situantional awareness of firefighter’s movement while adding additional security and safety through an emergency-distress button.

Using the internal position sensor, position transmissions and man-down alerts may be triggered by position, motion, impact or lack-of motion.

The ATLAS PT is completely self-contained and portable.  Meant to be worn by personnel in a variety of activities, it weighs just 16 ounces even with the built-in rechargeable batteries.  Simple to operate, just “turn it on and go”.  Furthermore, the ATLAS PT has some of the lowest power-consumption in the industry.  If configured for fast 10-second updates, it will still run 24 hours on its internal battery pack. The transponder features flexible reporting options, while a remote controlled sleep mode allows it to be active and consume almost no power at all.

An optional external battery pack allows oprating times of more than 45 days (at GPS report rates of 15 Minutes).

Learn more.

Remote Alert Wireless Command Center (RAWC).

RAWC is portable base-station that accommodates a laptop computer running RavTrack PC tracking software or alternative tracking solutions to create a lightweight, Easily carried on-site to track personnel in remote areas, or setup at a command and control center. Remote Alert Wireless Command Center (RAWC). Together with Raveon’s personnel tracker ATLAS PT and M7-GX GPS tracking radios  creates a powerful independent tracking system that any emergency response unit should have available for disaster prepardness and/or when access to other wireless systems is not available.

The RAWC communication subsystem is a portable base station in a transit case configured to be rapidly deployed from a vehicle. It has a VHF or UHF radio modem integrated inside the case which connects to a computer via included USB cable (running serial protocol). The unit also has a backup battery for temporary mobile use. The RF signals (GPS and VHF) are cabled to connectors on the outside of the case to provide the option of hooking up external components to the system.

For details see datasheet.

 

RAWC

 

Oil and Gas Telemetry and SCADA

Mine Radio Underground Communications: Leaky Feeder Radio System Raveon’s data radio products are well-suited for wireless process control, wireless SCADA and wireless telemetry applications. With the fastest Transmit / Receive turn around time in the VHF/UHF radio modem business, your polled telemetry system will operate fast and efficient.

See this example of a pipeline-monitor using Raveon’s data radio.

Raveon’s Wireless Telemetry Product Features

  • RS232, RS422, and RS485 serial interfaces
  • Easy to use with built-in smart radio modem. Data In = Data Out.
  • Works with MODBUS, DNP, and most serial SCADA protocols.
  • 1/2-5 watts of RF output in the 450-480MHz (other bands available)
  • Range of 5-50 miles
  • Ultra-fast T-R switching time of 3mS
  • Store-and-forward repeater capability
  • Exceeding all FCC part 22 and 90 requirements
  • Remote “Ping” capability

Products for the Oil and Gas Industry

 

Wireless data modems

M7s Series Wireless Modems

Ideal for SCADA and Telemetry applications, the M7 series of products features: 1/2-5 watts of RF output in the 450-480MHz (other bands available), range of 5-50 miles, ultra-fast T-R switching time of 3mS, store-and-forward repeater capability, remote “Ping” capability, voltage, temperature, and current monitoring, and RS232/422/485 interfaces available.  Perfect for SCADA, remote control, telemetry, mobile-data, and AVL applications.

More Info…

Data radio modems Raveon’s RV-M5 FireLine series of data radio modems are a high-speed FCC refarming compliant data radio designed for telemetry, wireless data, GPS, and remote control applications.

Mine Radio Underground Communications: Leaky Feeder Radio System

Mine Radio Underground Communications: Leaky Feeder Radio System Raveon’s M7 series radios are well-suited for underground mine radio data communications. With the fastest Transmit / Receive turn around time in the VHF/UHF radio modem business, your polled telemetry system will operate fast and efficient within an underground data system using a pair of cables one of which is a radiating cable the other a “receiving cable”. – a setup commonly referred to as a “leaky feeder system“. “Radiating Cable” implies that the cable is designed to radiate or asborb RF signals: something that coaxial cable is not generally supposed to do.

A leaky feeder system is used for underground mining or tunnel environments where line-of-sight radio communication is difficult or impossible to achieve. Radios are connected with a coaxial cable with a receiver (Rx) port on one end and a transmitter port (Tx) on the other side of the radio.

Get a free quote now!

Raveon’s Mine Radio Solutions Feature

  • RS232, RS422, and RS485 serial interfaces
  • Easy to use with built-in smart radio modem. Data In = Data Out.
  • Works with MODBUS, DNP, and most serial SCADA protocols.
  • 1/2-5 watts of RF output in the 450-480MHz (other bands available)
  • Ultra-fast T-R switching time of 3mS
  • Store-and-forward repeater capability
  • Exceeding all FCC part 22 and 90 requirements
  • Remote “Ping” capability

mining

Raveon has a complete line of real-time GPS tracking products for open-pit min tracking, monitoring, and safety.

See all of Raveon’s GPS tracking products on our GPS Tracking website here: www.ravtrack.com

Smart Grid Wireless Solutions

wireless utilities management Raveon’s data radio products are well-suited for wireless meter reading, wireless SCADA and power grid management. VHF and UHF radio frequencies over very long range communication ability, and with the fastest transmit / receive turn around time in its class, hundreds of thousands of meters may be polled or report-in every day on a single radio channel.

Features of Raveon’s Wireless Data Modems for the Smart Grid

  • RS232, RS422, digita, USB, and RS485 serial interface options.
  • Very economical solutions. Raveon has narrow-band radio modems for under $190.
  • Easy to use with built-in smart radio modem. Data In = Data Out.
  • Works with MODBUS, DNP, and most serial SCADA protocols.
  • Internal ARM processor with spare resources to run custom applications and protocols.
  • 1/2-5 watts of RF output in the VHF(136-174MHz) and UHF(402-512MHz) bands. Other bands available.
  • Range of 1-10 miles urban, 5-50 miles rural, 10-120miles line-of-site.
  • Ultra-fast T-R switching time of 3mS
  • Store-and-forward repeater capability
  • Exceeding all FCC part 22 and 90 requirements.
  • Remote “Ping” capability

Products for the Wireless Smart Grid

M7 Wireless Modem

M7s Series UHF Wireless Modems

Ideal for data collection applications, the M7 series of products features: 1/2-5 watts of RF output in the 450-480MHz (other bands available), range of 5-50 miles, ultra-fast T-R switching time of 3mS, store-and-forward repeater capability, remote “Ping” capability, voltage, temperature, and current monitoring, and RS232/422/485 interfaces available.  Perfect for SCADA, remote control, telemetry, mobile-data, and AVL applications.

More Info…

M7s Series VHF Wireless Modems

With similar features as the UHF M7 series, the VHF M7 operate in the 136-174MHz band, providing even longer-range communications. The power-efficient design uses less power than any other brand radio modem in its class. It powers on/of very quickly, for very low-power sleep applications.

More Info…

Low-cost Embedded Wireless modems.

Raveon has a number of VHF and UHF radio modules that are well suited for monitoring and controlling the smart grid.

Let us customize one of our designs to meet your system and cost goals.

More Info…

 radio to IP gateway Cigorn Wireless Gateway

Raveon’sCigorn Gateway is an easy to manage gateway/router. It is simple to deploy, data centric, and very bandwidth efficient.  It dynamically assigns wireless bandwidth to operate even when 100% of the subscriber devices need to communicate. It provides a single interface to a wide-area network of radio modems.

Cigorn is optimized for applications such as meter-reading, utility-monitoring, and GPS tracking. The Cigorn Gateway is built using powerful computing hardware, feature-rich software, and sophisticated communication protocols. But because Giga-bytes of RAM are cheap, GHz processors are cheap, and Open Source Linux software is free and reliable, the Cigorn Gatway is more sophisticated than comparable systems, and yet costs very little to deploy.

Use Cigorn Gateways to consolidate all your wireless interfaces, modems, protocols, and links into one manageable device.

More Info…

Low Latency Streaming

Overview

Low-Latency Streaming provides a continuous data feed from one modem to another, with less than 8 millisecond delay between the data entering one M7 and leaving the other. This mode is ideal for control of UAVs and other robotics as it provides a real-time response to control commands.

The M7’s low-latency streaming mode can provide a transparent, continuous 9600 baud stream from one modem to another.

Low-Latency Streaming Mode is available in M7 model radios via a firmware option specified at order time.

Differences from Other Modem Modes

In data modems, including the M7, data coming in to the modem for transmission is packetized before sending over-the-air. Packetizing data has a number of benefits, the two largest being that metainformation can be added to the data and checksums can be calculated. Packetizing data increases the overall range and reliability of the data modem substantially, while adding the necessary information to the packet to create diverse and complex networks. Packetizing data has two tradeoff costs: data bandwidth and latency. Streaming mode optimizes the data transmission for these.

The airtime used for the packetizing such as preambles, packet headers and checksums reduce the usable data bandwidth a little, depending on the ratios of packet length to headers. To provide a continuous stream, low-latency streaming mode removes these packet features and provides more useable data bandwidth.

Removing packetization provides an extremely large latency reduction. In packet mode, the latency of a piece of data within a packet is the length of time it takes to receive the entire packet into the modem, plus the time to transmit the packet over-the-air. The modem must receive the entire packet before it can begin transmission of the data, then the receiving modem must receive the entire packet to verify its integrity before it can begin outputting the data. In low-latency streaming mode, each data byte is transmitted immediately:

Drawing1

 

Example comparison between packet mode and streaming mode for a 60-byte piece of data with a 9600 baud serial link and 9600 baud over-the-air rate.

In general, most systems will want to use sync loss filtering, since it reduces the occurrence of bad data output. However, some systems may want to turn this off entirely, which instructs the receiver to output a constant stream of data, even if no sync can be detected. This is beneficial if the system design already includes a packet format with checksums or other measures of transmission success. In this case, the system’s packet format can be used to determine if the data has been received correctly or not, allowing the modem to output data that might have otherwise been dropped due to sync loss.Low Latency Streaming is only available as a custom firmware installation on the M7. Modems will be available with part number –SMR for stream receivers and –SMT for stream transmitters (e.g. RV-M7-UC-SMR).

Streaming mode is designed and optimized for a 9600 baud link over a narrow or wideband channel.

The follow sections detail the configuration decisions and settings that must be set for a low-latency streaming system.

Sync Loss Filtering

Sync Loss Filtering at the receiver allows the modem to suppress stream data output if it has determined that it lost the stream lock.

To enable sync loss filtering, issue the following command:

ATSS 1

Timeout Time

There are a few configuration options to consider when setting up streaming mode. The first is the timeout time. In streaming mode, the transmitter sends a continuous transmission that the receiver locks onto. If no data is available to send over the channel, an idle pattern is generated to allow the receiver to stay locked and ready to receive any real data that is transmitted.

There is a tradeoff here between the transmitter being keyed during the idle period (generating excess heat) and the receiver having to lock on a freshly started stream (creating a startup delay). This tradeoff is adjusted using

TXTOT x (Set x from 1-60 to configure how long transmitter will stay keyed if no data is present)

When a character is input at the transmitter and it is unkeyed, the stream is started and the timeout timer begins. Every time a new character is input at the transmitter, the timer restarts. Note that stream synchronization at the receiver usually takes a few hundred milliseconds, so it is likely that the first characters sent during this time are lost.

Other Required Settings

Streaming mode is a special protocol, set separately on the transmitter and the receiver. To enable streaming mode

ATMT 5 (to set to a stream transmitter)

ATMT 6 (to set to a stream receiver)

Finally, the baud rate must be set:

ATR2 8 (Over-the-air modulation set to 9600bps 4L)

It is recommended to set the serial port to 9600 baud as well. This will ensure more data cannot be provided to the modem than the stream allows. However, if this is not a concern, then setting the serial baud faster can further reduce latency delays (in a pulsed-data scenario).

ATBD 9600

ATMT 5 or ATMT 6 (Set as a transmitter or a receiver, respectively)

ATSS 1 (Optional. Require streaming sync to receive)

leaky feeder info

Leaky Feeder Radio Systems (using a radiating cable)

All Raveon data radios can be equipped with a radiating coaxial cable as an antenna for use as a leaky feeder system in areas such as, underground mines and railways, inside industrial buildings, and any other enclosed area where direct line of contact may be difficult to produce with a standard antenna. Leaky Feeder systems are the best way of communication in underground mines currently available.

radiating cable 2Leaky Feeder systems work by using a specially made coaxial cable, radiating cable, as an antenna, which is designed specifically with slots cut into the outer shielding to let the radio waves it would normally carry to a standard antenna, in and out along the length of the cable. Doing this turns the entire cable into one long antenna emitting and receiving along the entire length. This process makes the signal weaker over the distance of the cable and eventually gets to a point where the radio waves transmitted are to weak to be of use. Because of this problem, the use of line amplifiers is required at points between 350-500 meters, to boost the signal back up to a receivable level by your other points of contact.

 

RSSI and Communication Range

Radio Signal Strength Indication (RSSI)

All Raveon data radio modems have a built in RSSI indicator to help determine the signal strength of a received radio modem signal.  Raveon GPS tracking products also include location (latitude/Longitude) with the RSSI information which makes RF propagation analysis very simple.

RSSI is usually expressed in dBm which is decibels relative to milliwatts of received power.  0dBm = 1 mW.  Every time  the  received power drops in half, the RSSI will change by 3dB.  .5mW = -3dBm.   .25mW = -6dBm and so on.  Everytime the received power drops by 1/10th, the RSSI will drop by 10dB.  1/10 of a mW is -10dBm.  1/100th of a mW is -20dBm,  1/1000th of a mW is -30dBm and so on.

Radio Signal Strength (RSSI) will drop the further away a receiver is from the transmitter it is receiving.  This is a square-law phenemoena, so the received signal will drop by at least 1/4 every time the distance from the transmitter doubles.  1/4power is a 6dB drop in RSSI, so when a receiver with a given RSSI moves twice the distance from a transmitter, the RSSI will drop at least 6dB.  For quick range calculations, assume 6-10dB drop for every doubling of distance.

Radio Range

For example, in the above image, if the center dark-blue circle were 1/2 mile across at -70dBm signal, the -80dBm range would be about 1 mile, the -90dBm circle 2 miles and the -100dBm circle 4 miles across.

But, remember that most all communication systems on earth are limited by terrain not line-of-sight distance.  A 5 watt radio modem transmitting 5 watts of RF can be received thousands of miles away in free-space.  On earth, it may only be 1 to 100 miles.  Terrain, antenna heights, foliage, buildings, interference, and antenna gains play a huge role in determining how far a radio can communicate.  Also due to multipath, moving objects, and varying antenna positions, the RSSI at a typical location in the fringe area of reception will often vary 10dB – 20dB over a short amount of time (seconds).  This may cause sporadic reception, but with a good communication protocol, the 20dB drop-outs will not be noticed.

Signal strengths near a base station  are typically in the -30 to -60dBm range.  Most Raveon radios can measure an RSSI as large as -60dBm.  Above that, they will report some maximum value such as -58.  The upper limit varies by model.  Here is a rough summary of RSSI signal implications.

 

 RSSI Level

 Comments

  -30 to -60 

 Very strong.  The receiver is very near the transmitter or base station.

 -60 to -90   Excellent signal strength.  Usually the close to 100% coverage and reception.
 -90 to -105  Good reception, but occasional missed data.
 -105 to -115   Reception can be 100% but often will have drop-outs/blind spots when the average signal is this weak.
 -105 to -120  Signal reception will be sporadic.  Don’t design a reliable system to work with this weak of a signal unless you utilize an error-correcting and lost-message protocol.

 

 

 

 

Product Engineer (Electrical)

Purpose: Develop network software for deployment in large-scale distributed
systems

Raveon Technologies is an expanding organization, focused on the wireless industrial and machine-to-machine (M2M) communication markets.

Raveon is growing its engineering team to support the expansion of a contract to build the nation’s first nationwide data network tailor-made for M2M communication.

Position Responsibilities

  1. Electrical Design of Baseband and Digital Systems. Drive development from simple concept to a feature-rich finished product. Suggest additions to product requirements, then design and implement from block diagram to PCB bring-up, debug and optimization.
  2. Mechanical Concept Design and Implementation. Develop product packaging concepts and manage product packaging development. Highly-qualified candidates will develop mechanical designs for simpler products and work closely with mechanical engineers to create rugged, reliable products.
  3. Prototype Bring-up and Debug. Follow product design with hands-on bring-up and detail-oriented test and optimization of design. Highly-qualified candidates will write firmware for straightforward products and will work alongside Raveon’s embedded software engineers when need dictates.
  4. Transfer to Manufacturing. Design with the appropriate production quantity in mind, tailoring process to suit both small concept products and large overseas production runs. Design and create documentation to support test and transfer to manufacturing. Train production personnel as needed and periodically receive feedback on improvements to speed manufacturing.
  5. System Design. Suggest the use of Raveon products in larger systems. Detail how specific existing or adjacent possible designs can be used in innovative ways.
  6. Ongoing Design Support. Continue engagement with all Raveon designs through improvements based on field testing and customer feedback.

Skillset
Digital Circuit Design, Power Supply Design, Baseband Audio Circuit Design, Schematic Capture, Design for Manufacturing, Manufacturing Documentation, Project Management

Beneficial Skills
Layout, Embedded C, Mechanical CAD, Waterproof and Mil-Spec product design, Sub-GHz RF design

 

If this opportunity is of interest to you, please send an introduction and your resume to our dedicated recruitment e-mail.