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Optimize your research, ecology, and conservation projects with the Telonics series of terrestrial GPS/Iridium collars. Specifically designed to withstand the most rigorous field challenges and the demands of modern biology, these devices allow you to collect high-precision geographical positions and transmit them in real time from any corner of the planet via the Iridium network's constellation of 66 low Earth orbit (LEO) satellites.
Thanks to their two-way communication architecture, you not only receive mortality alerts, climate data, and activity logs on your screen, but you can also send remote commands to reprogram sampling intervals or activate release mechanisms without the need to recapture the animal. Furthermore, models from the TGW-4270-5 series onward incorporate a space-grade hermetic sealing inside a metal housing—the same technology used by NASA—completely eliminating moisture penetration and guaranteeing the long-term operational success of your scientific campaigns.
| Model | Housing Dimensions | Housing Weight | Estimated Weight with Collar | Sample Battery Life (6 GPS/day, No VHF) | Sealing Type |
| TGW-4170-5 | 5.5 x 3.3 x 3.0 cm | 72 g | ~120 - 130 g | 1.9 years | Environmental water-resistant |
| TGW-4177-5 | 5.5 x 3.3 x 3.0 cm | 72 g | ~120 - 130 g | 1.9 years | Environmental water-resistant |
| TGW-4270-5 | 5.9 x 3.6 x 2.7 cm | 124 g | ~180 - 310 g | 2.8 years | Hermetic metal canister (NASA Standard) |
| TGW-4277-5 | 5.9 x 3.6 x 2.7 cm | 124 g | ~180 - 310 g | 2.8 years | Hermetic metal canister (NASA Standard) |
| TGW-4470-5 | 6.5 x 4.6 x 3.6 cm | 180 g | ~350 - 700 g | 4.4 years | Hermetic metal canister (NASA Standard) |
| TGW-4477-5 | 6.5 x 4.6 x 3.6 cm | 180 g | ~350 - 700 g | 4.4 years | Hermetic metal canister (NASA Standard) |
| TGW-4570-5 | 7.3 x 5.1 x 3.7 cm | 260 g | ~500 - 880 g | 9.1 years | Hermetic metal canister (NASA Standard) |
| TGW-4577-5 | 7.3 x 5.1 x 3.7 cm | 260 g | ~500 - 880 g | 9.1 years | Hermetic metal canister (NASA Standard) |
| TGW-4579-5 | 7.3 x 5.1 x 3.7 cm | 260 g | ~500 - 880 g | 9.1 years | Hermetic metal canister (NASA Standard) |
| TGW-4670-5 | 8.9 x 6.9 x 5.9 cm | 590 g | ~900 - 1500 g | Greater than 10 years | Hermetic metal canister (NASA Standard) |
| TGW-4677-5 | 8.9 x 6.9 x 5.9 cm | 590 g | ~900 - 1500 g | Greater than 10 years | Hermetic metal canister (NASA Standard) |
| TGW-4679-5 | 8.9 x 6.9 x 5.9 cm | 590 g | ~900 - 1500 g | Greater than 10 years | Hermetic metal canister (NASA Standard) |
| TGW-4770-5 | 11.5 x 6.9 x 5.9 cm | ~850 g | ~1150 - 2000 g | Greater than 10 years | Hermetic metal canister (NASA Standard) |
| TGW-4777-5 | 11.5 x 6.9 x 5.9 cm | ~850 g | ~1150 - 2000 g | Greater than 10 years | Hermetic metal canister (NASA Standard) |
For the correct operation and field deployment of this equipment, an active Iridium satellite data plan contracted through an authorized provider (such as metOcean telematics) and the official configuration software are strictly required:
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The TR-8 is a portable scanning receiver designed for broadband coverage (138 – 235 MHz) with high narrow-band sensitivity. It stores more than 2,000 scannable frequencies, customized and organized into up to 25 independent lists. A full 177 dB gain control allows complete adjustment for high signal levels, making it ideal for transmitter recovery. Automatic signal detection includes a signal strength meter, digital pulse indication, and pulse rate measurement. The internal Li-Ion battery provides up to 15 hours of operation. The TR-8 can be easily programmed, with or without a PC, and is made in the USA.
| General | Synthesized direct-conversion receiver |
| Frequency Coverage | 138 to 235 MHz, continuous coverage |
| Frequency Selection | Direct entry via keypad or rotary knob |
| Frequency Resolution | 100 Hz |
| Center Frequency Accuracy | ±1ppm at 20°C |
| Frequency Stability | ±2ppm from -20 to +70°C |
| Long-Term Frequency Drift | ±100 Hz after one minute of stabilization |
| Audio Bandwidth (-3dB) | 500-1300Hz / 350-1800Hz / 800-1600Hz |
| Acceptable Operating Modes | PAM, PPM, CW, SSB |
| Pulse Detection | Minimum width: 10 ms; Minimum frequency: 12 BPM |
| Low Battery Indicator | On-screen battery meter |
| Power Source | Internal: 4.2V / 3300mAh Li-Ion; External: 5V via USB-C |
| Typical Operating Time | 15 hours (automatic LCD backlighting); 12 hours (locked LCD) |
| RF Input Impedance | 50 Ohms |
| Noise Figure | <4 dB typical |
| Sensitivity | Better than -130 dBm typical (500-1300Hz) |
| Minimum Detectable Level | -150 dBm (0.007 µV) |
| Opposite Band Suppression | 40 dB typical |
| Audio Gain Range | 18 dB typical |
| RF Gain Range | 177 dB typical |
| Total Gain Range | 195 dB typical |
| Audio Output Impedance | 16 Ω (headphone jack) |
| Internal Speaker | Muted when headphones are inserted |
| Audio Output Connector | 1/8 in (3.5mm) stereo or mono |
| Programming / Charging Connector | USB-C |
| RF Input Connector | BNC |
| Display | LCD 128x64 3 x 5 cm with automatic backlighting |
| Keypad | Backlit silicone with 3 multi-function keys |
| Gain Control | Rotary encoder with push-button (RF gain and audio volume) |
| Tuning Control | Rotary encoder with push-button, 100 Hz steps |
| Multi-Function LED | Red/blue indicators for battery, RF pulses, and over-gain |
| Scan Memory | 2,475 frequencies in 25 lists |
| Programming | Via PC or directly on the TR-8 |
| Operating Temperature Range | -20 to +70 °C |
| Dimensions | 15.9 x 6.3 x 3.0 cm (6.3 x 2.5 x 1.2 in) |
| Weight | 285 g typical |
