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GPS Systems

G5M-D Iridium/GPS Collar

Get your animal's location data from the ATS Iridium Website, via two-way Iridium satellite. Receive SMS text messages on specified events, including traversing a geo-fence.


  • 580 grams total weight (1“D” Batteries)
  • Remotely commanded collar release mechanism via ATS Website command
  • Long life, 2 to 4 years, typical (1”D” Batteries)
  • "G5M" models offer Neolink radio-link for Neolink devices
  • Remotely commanded fix rate changes to one every ten minutes available
  • Geo-fencing capability with SMS text alerts

Get your animal's data from anywhere you can access the web.

You can easily program the G5M-D collar using the supplied Windows-based software. You can control how often fixes are collected and stored, how often data is uploaded to the ATS Iridium website (up to six per day, each holding up to 22 locations), and how often the VHF beacon will transmit (this allows you to maximize battery life).

The model G5M-D uses the Iridium satellite system to send stored location data collected by the collar’s on-board GPS receiver to ATS’s servers. The data is then uploaded to the ATS Iridium website where users can view and retrieve their data. Available data files include location data in .csv format and Google Earth .kml files.

You can also use the ATS website to remotely command "on-the-fly" changes to the fix rate, mortality schedule, fix duration time, Iridium data transmission interval, and/or VHF schedule of your collar. A remotely commanded collar release is also accomplished using the website. Another feature of the website is that you can configure email and SMS alerts for certain events.

An integrated VHF transmitter on the collar allows you to track the animal in the field, and the collar release mechanism allows you to release the collar from the animal and reuse the collar later. In addition, the G5M models provide a radio-link with the M3930U VIT Transmitter and M4230BU Fawn Collar to monitor specific events such as birth and proximity.


Typical Life

Variable; factors affecting life include number of GPS fixes per day, # of Iridium data transmissions per day, visibility of GPS and Iridium satellites, VHF on-time per day.


GPS Location Data:

  • Number of fixes to collect per 24 hr period, hourly increments
  • Up to three (3) programmable discrete location schedules
  • Data uploads from every 4 hours to once per week

Three GPS on time options

VHF duty cycle from 1 to 24 hours per day


  • 4, 6, 8, 10, 12 hours
  • Fast or Slow mortality VHF option

Neolink and Geofencing functionality as necessary.

Remote Programmability (via ATS Iridium website)

  • GPS fix rate, 12 intervals from 10 min. to 24 hrs.
  • Mortality hours, 4, 6, 8, 10, 12 hrs.
  • GPS fix duration time
  • Satellite data download transmission interval, 11 intervals from 4 hrs. to 7days
  • Neolink options (when applicable)
  • Collar release

Data Collected/Transmitted

  • Collar electronics collects and transmits to Iridium satellite: Year, Julian day, time, GPS fix status, fix location (if successful), activity level, temperature, and system statistics
  • ATS server generates and uploads to website: a current data file, an accumulated data file (both .txt) and a Google Earth compatible file (.kml)
  • Datum: WGS84

VHF Transmitter

Daily on/off time by hour, minimum on-time one hour/day


“D” Size


Programming via wireless UHF radio-link using Wildlink Comm Module, PN 17621

Duplex satellite communication via Iridium modem


  • Weight: 580 grams, typical (1.3 lbs.)
  • Size: Electronics Box 10 x 5 x 5 cm.
  • Box Material:  Silicon-reinforced Polycarbonate plastic.
  • Collar Material: Sized to your specification using 5 cm (2”) Neoprene belting. Optional rubber out layer, also available in 7.5 cm (3") width.

Ordering Information

  • Specify collar circumference and VHF frequency range.
  • The Wildlink Comm Module, PN 17621, is required, available at nominal charge.


New GPS collars are covered by a limited warranty for one year from time of shipment, or up to the calculated minimum battery life, whichever occurs first.

Features and specifications subject to change without notice.


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