PIT Telemetry

VisAdvies looks for a unique solution for each location to make your PIT project a success.
PIT Telemetry

How it works

Passive integrated transponder (PIT) telemetry is a method using antennas and tags. The system is based on the fact that PIT-tagged fish that pass an antenna are detected by the reader.

PIT tags

PIT tags do not have a battery but a coil and are therefore called passive rather than active. Since the tags are passive, they can last a lifetime. Tags for PIT telemetry range from 12 mm to 32 mm. The size of the tag that will be used depends on the size of the fish species. The PIT tag is inserted into the abdominal cavity of the anaesthetised fish using a hollow needle or via incision.
PIT Tags
Oregon HDX

The Antenna

Before tagging the fish, PIT antennas are placed at a natural bottleneck. The antenna consists of a durable plastic frame into which an insulated copper wire is incorporated. In this way, each antenna can be made in different shapes and sizes. Each antenna has a tuner box that ensures the antenna functions optimally for detecting PIT tags. A tag, which comes within range of the antenna, is charged by the magnetic field of the copper wire. The charged tag sends its unique code, which is received by the antenna. The whole cycle takes place within a fraction of a second. The signal is transmitted via cables to the reader, which stores the detection, time and date. The PIT telemetry data can provide insight into fish behaviour and distribution.
PIT Antenna

PIT Station

Each PIT station contains a reader, a wireless internet module (WIM) and a power supply. The reader can simultaneously monitor four antennas. The detections from the antennas are stored in the reader and then sent via the WIM to the cloud. The storage capacity of the system is virtually unlimited. The WIM ensures that every 24 hours the detections are sent to a cloud for further processing. Each detection contains the unique PIT tag number, antenna number and time/date of the observation. The PIT stations can be powered by a grid connection or a solar panel combined with batteries.
PIT Station


The detections in the reader's database are uploaded every 24 hours to the VisAdviesAMF application (https://www.visadviesamf.nl/). The application makes storing, managing and visualising the PIT telemetry data easy and allows the user to access the data from anywhere.
Visit VisAdviesAMF
VisAdvies Platform

PIT Tag Antennas

VisAdvies specializes in designing and building customized PIT antennas, data collection stations and online databases. Our expertise allows us to offer unique and high-quality monitoring systems.

Pass-Through rectangle antennas

Fully customizable for monitoring systems, available in different sizes and made of recycled durable plastic.
The material is not impregnated and does not leach out.
Small Antenna
Small antenna

Small antennas

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Medium antenna
Medium antenna

Medium antennas

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Large antenna
Large antenna

Large antennas

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Pass-Through cirkel antenna

Pass-Through cirkel antennes

Fully customizable for monitoring systems, available in different sizes and made of tylene.
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Pass over antenna

Pass over antennas

Fully customizable for monitoring systems, available in different lengths and made of HDPE.
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Portable antenna

Portable antennas

PIT tag detection antenna for portable monitoring.
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Have you become interested or would you like more information? Then please contact one of our staff members.
MSc. Arno Veenstra
MSc. Arno Veenstra
+31 6 83 96 64 75
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Online Data Management

VisAdvies offers clients the opportunity to view current monitoring data online. Fish migration and the progress of the survey can be closely monitored. Faults are quickly remedied, ensuring data quality. VisAdvies also offers insight into your PIT stations with VisAdvies AMF. This platform is specially developed for your data management and processing.

For more information on automatic monitoring of fish migration with PIT telemetry, please visit visadviesamf.nl or contact one of our employees.
PIT Telemetry DatabasePIT Telemetry Database