The 6 mm transmitter is the latest addition to Thelma Biotel’s tag range. With a diameter of only 6.3 mm, it’s our smallest tag yet, and possibly the world’s smallest tag in the frequency range of 63-77 kHz. With a volume reduction of more than 35%, the 6 mm tag still manages to maintain nearly the same transmit range and battery life as the classic 7 mm tag, allowing for more flexibility when tagging small fish.

Physical Properties of ID-LP6 Transmitter
ID-LP6 ID-2LP6
Diameter [mm] 6.3 6.3
Length [mm] 14.5 22
Power output [dB re 1 uPa at 1m] 137 137
Weight in air [g] 1.2 1.9
Weight in water [g] 0.7 1.2
Estimated Battery Life for 6 mm Transmitters
Transmit Inteval [sec] ID-LP6 ID-2LP6
30 70 days 139 days
60 118 days 7.7 months
90 5 months 10 months
120 5.9 months 11.8 months