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The CART Series - Combined Acoustic / Radio Transmitters

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CARTIf your interests include species that move between marine and freshwater environments, our combined acoustic and radio transmitting (CART) tag will let you monitor the migration of these species with a single transmitter and receiver system. Through advanced programming, CART tags can be tailored to the optimal mode of transmission, be it radio or acoustic.

Transmits signals in radio and/or acoustic mode
Allows you to work in dynamic conductivity environments (estuaries containing haloclines and/or mixtures of salt and freshwater). Allows you to work in deep freshwater bodies. Eliminates the need for two tag and receiver systems. .

Operates in a "static" mode that alternates regularly between acoustic and radio transmission modes
Minimizes costs.

The latest in crystal stabilized microprocessor based coded tags
Allows unique digital coding scheme. Allows more stable timing of transmit-bursts (the burst rate of non-crystal controlled, i.e., non-microprocessor based, tags tends to vary significantly with variations in ambient temperature).

Digital coding scheme
A single tag allows both the manual tracking and automatic datalogging of animals. Allows the tracking of over one hundred individuals on a single frequency. Allows the transmission of sensor data as well as unique ID.

Flexible transmit-burst repetition rate
Allows users to dictate desired rate. Allows the extension of tag longevity (by slowing it down). Increases the ease of manual tracking (by speeding it up).

High reliability
Allows you to maximize confidence in study results.

Standard or enhanced longevity
Shorter codes allow you to extend operation longevity.

Variable sizes
Allows you to match the telemetry capability with the biology of the species of interest. Allows you to increase longevity when size is less of an issue.

Oral or surgical internal implantation or external mounting
Allows you to match the telemetry capability with the biology of the species of interest.

All tags are encased in a biologically inert material
Protects the electronics, ensures long life and minimizes negative impacts on the tagged individual .

System compatibility
Works with the most sophisticated and widely used biotelemetry receiver available today, Lotek's SRX 400. Works with Lotek's wireless hydrophone system .

 

Combined Acoustic Radio Transmitters - CART Series:

Model

Size Dia. x L (mm)

Longevity based on 5 sec. burst rate (days)

Weight in Air (g)

Weight in Salt Water (g)

Frequency (kHz)

Acoustic
Power (dB)
@76.8 KHz

CART16_1

l6 x 57

663

23.8

13.5

65.5/76.8

156

CART16_2s

16 x 68

904

31.5

18.0

65.5/76.8

156

CART16_2

l6 x 85

1446

36

19.4

65.5/76.8

156

CART16_3s

l6 x 87

548

38

21.0

65.5/76.8

162

CART16_3

l6 x 100

748

43.0

23.4

65.5/76.8

162

CART32_1s

32 x 101

5120

94.5

37.7

65.5/76.8

156

Please note:

  • Acoustic power output is an average expressed in dB re 1m P @ 1meter (nominal).
  • All dimensions are for internal attachment with the exception of the CART32_ ls.
  • Longevities vary, based in part upon environmental conditions to which they are subjected. For this reason, warranted longevity is defined as 80% of the specified value at time of order. Calculations are based on the battery manufacturer's specifications at a code burst interval of 5 seconds. For CART tags, the code burst interval is defined as the time between any consecutive pulse.
  • All tags are guaranteed to meet stated specifications upon shipment. Any Lotek tags found to be defective, with respect to material, workmanship or guaranteed longevity, effective from date of receipt, will be repaired or replaced.
  • Periodic design modifications to individual models may alter specifications. Selection of external attachment design or other options may further affect stated specifications. It is recommended that specifications be confirmed when placing an order.

Examples of tracking applications for which combined acoustic/radio transmitters are ideally suited include:

  • studies of migration activity of anadromous species from ocean through to spawning site
  • studies of lake dwellers moving between shallow and deep freshwater

Follow these links for more information on CART tags:

Full CART product sheet (PDF).