Category Archives: GPS Transponder Features

A GPS tracking system for marinas, boat rentals, and other watercraft

Raveon’s asset tracking solutions gives customers the ability to focus on keeping up with their assets, instead of keeping up with monthly fees.  Using radio transmissions to broadcast received GPS messages, Raveon’s GPS transponders allow a marina operator to track all of their rental boats or other watercraft in real-time using a graphical display.  Competing […]

Digital Odometer Accuracy

Digital Odometers are incorporated into some Raveon GPS transponders such as the M7-GX.  They work very well, but you will see a difference in reading between the digital odometer reported by a GPS transponder and the odometer on the dashboard. A GPS transponder with GPS uses its GPS location to calculate distance .  Every second […]

Why Use GPS Trackers Instead of Two-Way Radio?

  Sometimes two-way voice radios can be used for safety and personnel locating.  When trying to decide if a dedicated GPS transponder like the Raveon ATLAS PT or a voice radio is the right choice, keep these important points in mind: You will know where everyone is at all times.  A GPS Transponder operates at […]

Wireless Proximity Alert

Raveon offers many options for wireless proximity alerts. A proximity alert system can be as simple as connecting a light or buzzer to the a M7 data radio or it can use RavTrack PC to visualize tracked objects as they move. Proximity alerts may be set on portable transponders to trigger when they get near […]

Where am I? Finding the local GPS transponder position

This question is often asked with regards to Raveon’s GPS tracking transponders. This tech blog describes how to determine your GPS transponder’s locations and addresses some additional questions. The short answer The NMEAOUT 1 command will enable output of NMEA 0183 compliant messages on the serial port. This will work on any GPS-enabled Raveon radio […]

GPS Receiver Dynamics

The GPS receiver in Raveon’s M7 and Atlas PL GPS transponder may be configured for different situations. By default it is configured for LAND operation. Selecting the correct operating parameters has a significant impact on GPS receiver performance.  GPS receiver dynamics may be optimized for LAND, AIR, or SEA operation.      LAND  = 1    Maximum speed […]

Configuring the NMEAMASK bitmask

The M7 GPS transponders and the Atlas PL personal locators may be configured to output NMEA 0183 GPS messages from its internal GPS receiver.  For GPS tracking, these GPS transponders can receive GPS position reports from other radios, and they may also be configured to output their own GPS location via their serial port. Following […]

TDMA Time Slots (Multiplexing Time Division)

Raveon’s M7-GX AVL transceiver uses a  Time Division Multiple Access (TDMA) protocol to transmit position, status, and data over the air.  TDMA protocols greatly increase the available channel bandwidth but they require more system planning than conventional carrier-sense methods.  With a TDMA system, each radio in the system is assigned a time slot to use for sending […]