A body implant transmitter with a coil antenna is surgically implanted into the body cavity through a small incision and is closed with sutures. The transmitter is fully encapsulated, including the coiled antenna. This design is used on a variety of fish when there is a possibility an external antenna could become tangled. Training is required to surgically implant the transmitter and there is a recuperation period for the fish. This attachment minimizes fish behavioral changes. The field range of a body implant transmitter with a coil antenna is approximately one-third that of a body implant transmitter with a trailing antenna. An extended range option is available on selected models (those with "B" suffix).

Series	Weight (grams)	Life (days)	Description
F1000	1.4-2.5	15-168	Small sized, cylindrical shape, silver oxide battery.
F1100	3.1-4.0	86-468	Medium sized, flat shape, silver oxide battery.
F1200	9.0-145.0	64-3600	Larger sized, cylindrical shape, lithium battery. Extended range option available.

A body implant transmitter with a trailing antenna is surgically implanted into the body cavity through a small incision and is closed with sutures. The antenna either exits the body through a separate 1-2 mm incision or passes through the gill cover and is positioned backwards. This attachment method has been used on several different species of fish. Again, training is required to surgically implant the transmitter and there is a recuperation period for the fish. This attachment method also minimizes fish behavioral changes. Good field range is obtained through the trailing whip antenna. An extended range option is available on selected models (those with "B" suffix).

 

Series	Weight (grams)	Life (days)	Description
F1405	0.5-.85	20-51	Smallest sizes. Power output and range reduced for longer life (versus R1400 series). Minimum potting for lowest weight. Silver oxide battery, cylindrical shape. Limited frequency availability.
F1505	0.5-1.2	12-437	Smallest sizes. Power output and range reduced for longer life (versus R1500 series). Minimum potting for lowest weight. Silver oxide battery, flat shape. Limited frequency availability.
F1400	1.0-2.1	7-83	Small sizes. Standard power output and potting. Silver oxide battery, cylindrical shape.
F1500	1.0-3.6	7-195	Small sizes. Standard power output and potting. Silver oxide battery, flat shape.
F1700	1.4-3.4	2-37	Small, cylindrical shape, stacked silver oxide batteries (2).
F1800	2.5-130.0	28-3600	Larger sized, cylindrical shape, lithium battery. Extended range option available.