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Table 2 Duty cycle protocol of ear satellite transmitters (PTT) mounted on polar bears

From: Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus)

Area Year Every day Every 2nd day from Every 4th day from Working hours per day Maximum daily transmissions Repetition rate (s)
East Greenland, Baffin Bay, and Kane Basin
SPOT-227B
2007 1 March–31 May   1 June 16 150 45/90b
  2008    1 March 16 140 42.5/87.5b
  2009 1 April–31 May   2 June 14 150 56/86b
  2010 22 March–19 April   23 April 14 150 45/90b
  2011 1–30 April   2 May 13 150 90
  2012 4–20 April   24 April 13 150 43.5/88.5b
Baffin Bay and Kane Basin
SPOT-305A
2013 5–19 April   23 April 13 150 44.5/89.5b
Southern Beaufort Sea
SPOT-227B
2009 Deployment date–a   4 200 56
  2010 Deployment date–   4 200 56
Southern Beaufort Sea
SPOT-227C
2011 Deployment date–   4 200 90c
Chukchi Sea
SPOT-227B/SPOT-227D
2010–2011 March–June 1 July 4 250 90
  1. The bears were tagged in East Greenland, Baffin Bay, Kane Basin, the southern Beaufort Sea, and the Chukchi Sea, 2007–2013
  2. aThree PTTs transmitted every second day
  3. bRepetition rate in water/on land
  4. cOne PTT had repetition rate 60