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Radio Collars for Lions

lioness collar lion on a farm


The Project: 
AfriCat North Research Project: Trans-boundary movements along the boundaries of the Etosha National Park (hereafter ENP) and in adjacent conservancies.     

The frequency of lions crossing the ENP boundary and the formation of independent populations outside of the park are not known. This study will monitor trans-boundary lion movement to determine how the conflict between lions and the farmers along these boundaries could be minimised. 

This Project will be coordinated by the AfriCat / Okorusu Communal Carnivore Conservation Project Units (CCCP). Individuals found outside of ENP boundaries will be collared using GPS collars. The movement of these lions will be monitored and data will be used to locate weaknesses in the fence. The pride dynamics along the Etosha boundary will also be studied.

Details: (courtesy Africa Wildlife Tracking)
These Satellite collars have a built-in VHF transmitter, which work with the Iridium satellites and gives near-real-time data.
The unit gets a current GPS position and transmits that point up to the satellite system.
The Iridium satellite constellation consists of 66 satellites that orbit the earth over the poles in 6 equidistant orbits, each orbit containing 11 satellites.

Location Based Alerts: Geo fence areas can be defined for specific tracking devices. Alerts can be triggered when a specific tracking device enters and/or leaves the defined areas. Alerts can be delivered via SMS or email. This feature, which will enable the CCCP to improve the monitoring of lion movement in relation to villages and livestock kraals, is another advantage of near-real-time data up-linking. 

Total cost per GPS Collar + Service Fee, landed in Namibia: N$ 25 000.00 

africat north map



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Pinnacle Range Iridium Pre-Set Data Schedules
and Collar Life Estimates.


  • Sirtrack Pinnacle GPS Iridium Collars are designed to be simple to use and set up.
  • For simplicity and ease of use pre-set data schedules (or configurations) have been determined which can have sensors (temperature and activity) enabled or disabled (location only).
  • Pre-set data schedule allows simple estimation of collar life and data costs.
  • Collar life and data cost will be affected by alerts received from and commands sent to the collar.

Click here for information on the Pinnacle Range Iridium Pre-set data schedules and collar life estimates. (PDF)

Pinnacle Range Iridium Data Pricing

Iridium Data charges are managed through an Iridium Value Added Reseller (VAR).

Sirtrack has chosen Xeos Technologies Limited ( as their preferred VAR.

Customers have the option to choose:

  • their own VAR,
  • work Direct with Xeos Technologies,
  • or pre-purchase data from Sirtrack.

Sirtrack offer two types of data plans for users of Pinnacle GPS Iridium Collars

Click here for information on the starter and pre pay plans, excess data charges, activation charges etc. (PDF)


GPS Plus Collar

gps plus collar


The GPS PLUS Collar series has been designed to give scientists the most flexible solution and reliable technology for all kinds of wildlife studies. Make the best of your study by measuring GPS positions, fine scale temperature and high resolution activity information.

One of the most important features is the flexible wireless data communication in both directions, offering communication on demand via VHf or UHF or regular communication windows via GSM or Iridium. This way you can change GPS and VHF beacon schedules when your research schedule changes, even while the collar is on the animal. GPS data can also be downloaded using Globalstar or ARGOS. GPS PLUS collars also offer Virtual Fence and Proximity Sensor options, giving you even more insights into the animals life and allowing you to change GPS schedules automatically whenever high scale information really counts.


gps plus collarsMultiple Communication Options

  • UHF 2-Way Communication for data download and reprogramming
  • VHF 2-Way Communication for data download and reprogramming
  • GSM 2-Way Communication for GPS data download and reprogramming
  • Iridium 2-Way Communication for GPS data download and reprogramming
  • Globalstar 1-Way Communication for GPS data download
  • Argos 1-Way Communication for GPS data download

Multiple Sensor Options

  • GPS Position
  • 3-axes Activity Sensor (acceleration)
  • Temperature
  • Mortality
  • Hibernation
  • Proximity Sensor
  • Virtual Fence

Additional Options

  • VHF Beacon Transmitter
  • Timer-controlled Drop-Off
  • Radio-and-timer-controlled Drop-Off
  • Coloured Belt

Read more:
1. GPS Plus Collar Overview (PDF)
2. GPS Plus 2010 Collar (PDF)
3. GPS Plus Software and Data Manager (PDF)


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