GPS/Argos System for Entangled Whales

TGM-4685-3
TGM-4685-3 GPS/Argos unit designed for attachment to debris entangled on whales.

Models

Model Dimensions* L x D (in/cm) Unit Weight (g) Operational Life (days)1 Operational Life (days)2
TGM-4685-3 11.75 x 2.5
30 x 6.4
950 225 320

1 The GPS/Argos operational life indicated assumes 1 GPS fix per hour; 500 mW Argos transmission with 31 bytes of data, scheduled 24 hours per day with 60-second repetition rate, use of onboard satellite prediction with location of ~30° N, 140° W; temperature of 10°C; and always on surface. The VHF portion of the unit has an operational life of 300 days at standard power and 60 beats per minute.

2 Operational life with same assumptions as above, except with 50% of time spent under water.

* Length does not include antenna, which is ~7 inches (17 cm).

Key Features

  • Collects GPS positions and transmits those locations as data through the Argos satellite system, which provides global coverage.
  • Designed to be fitted into a user-provided float and attached to debris entangled on whales (to assist with and monitor removal efforts).
  • These units have typically been provided with a standard message that includes the following data which can be directly received from Argos:
    • Last 4 locations and fix times, with 10-m resolution, and collected hourly.
    • Last 4 underwater percentages, with 6% resolution, and collected hourly.
    • Error detection byte.
  • VHF portion of the unit allows tracking from a boat or aircraft (with use of appropriate VHF receiver and antenna).
  • Battery packs can be replaced by the user, or units can be refurbished to their original condition at Telonics.
  • Salt-water-switch (SWS) synchronizes GPS attempts and Argos transmissions with surfacings to maximize data collection and transmission, suppresses Argos transmissions and GPS attempts while under water to extend operational life, and allows collection of dive data.
  • All positions determined and sensor data collected is stored on board the unit, thus if the tag is able to be recovered, stored data can be downloaded using Telonics Data Converter (TDC).
  • Multiple other programming options are available, similar to other Telonics GPS/Argos marine configurations.

TGM-4685 Mechanical Drawing

Electronic Specifications

µGPSI-23 GPS/Argos/VHF Specifications

General Specifications

Timing Accuracy Timing is synchronized to GPS time when available. If GPS time is not available, then internal timing accuracy is:
6 min/year at 25° C
30 min/yr -20 to +40° C
47 min/yr -40 to +70° C
Available Sensors Mortality, Activity, Temperature, Low Voltage (as allowed by specific software)
Salt-water-switch and Pressure are hardware and software options on some configurations.
Memory Capacity Capable of storing ~500K fixes in nonvolatile flash memory in association with other sensor data.
Programming Programmable using Telonics TPP software and TSC-7A cable. Programming options are hardware and software dependent, but include GPS, Argos, and VHF schedules; sensor activation and schedules; power output; Argos can also be scheduled to transmit only during satellite overpasses based on the GPS location and the orbital parameters installed prior to deployment.

GPS Receiver Specifications

Performance -163 dBm tracking sensitivity
-147 dBm acquisition sensitivity
Datum WGS-84
Time to First Fix (TTFF) 35 sec typical (with clear view of sky)
Quick Fix Pseudoranging (QFP) 3-5 sec typical (with clear view of sky)

Argos Transmitter Specifications

Operating Frequency ARGOS Frequencies
401.6300MHz to 401.6800MHz in 1 kHz Steps
Brazilian SCD-1, Channels C1 to C9
401.6180MHz to 401.6220MHz in 500Hz Steps
Frequency Stability ± 0.5 ppm maximum from -30° to +70° C
± 2.0 ppm maximum from -40° to -30° C
Initial Frequency Error ± 0.5 ppm maximum at +23°C, ± 2° C
Aging ± 2.0 ppm maximum after 1 year
RF Power Out Standard Power version: 500mW (+27dBm), 400mW (+26dBm) option, into 50 Ω
(User selectable using TPP programming software)

High Power version (H): 800 mW (+29 dBm) ±1dB nominal into 50 Ω
(available in some configurations)
Spurs and Harmonics <-40dBc minimum, -60dBc typical (Coherent Spurious)
<-50dBc minimum, -60dBc typical (Non-coherent spurious)

VHF Transmitter Specifications

Available Frequency Options Option 702 134-139 MH
Option 705 140-154 MH
Option 707 146-160 MH
Option 715 156-172 MH
Option 720 160-177 MH
Option 740 174-192 MH
Option 750 191-210 MH
Option 760 210-237 MH
Note: Frequency can be programmed in 100Hz steps within a given frequency range.
Frequency Stability Better than ±3ppm at room temperature ±5 ppm total tolerance over full temperature range
Operating Temperature -40° to +70° C
Pulse Width Programmable (10 to 250 msec)
Pulse Period Programmable (265 to 5000 msec)
Multiple pulse periods selectable per specific software and TPP
Transmitter Timing Programmable, including daily and seasonal duty cycles.
Power Output Selectable levels via hardware and software.
Effective Isotropic Radiated Power (EIRP) varies, depending on packaging, antenna configuration, and immediate environmental conditions. *California Users: This transmitter meets the California requirement of EIRP<0.009W for all configurations.
Emission Designator 2k00P0N
Harmonic Suppression Better than 30dB (>40 dB typical)
Spurious Emissions <-35 dBc at 10 kHz offset from carrier
Frequency Aging: <2ppm/year
Shock: <1ppm 3000g x 0.3ms x ½ sine x 3 dir
VSWR RF output stable to 10:1 VSWR, all phases
Radiated harmonic levels are degraded with poor load VSWR.
Spurious emission specification maintained for >10:1 VSWR

Related Products

Related Links to Information on Other Websites

Legacy Products

This information on discontinued products is provided for individuals who are still using these older systems. Product descriptions may be time sensitive or even outdated. Please contact Telonics if you have questions.

Telonics supports these products as possible based on availability of parts, software, or other considerations; but no longer sells them new.

Legacy: TGM-4685 Specifications (Uses the µGPSI-20 System)

General System Specifications

Timing Accuracy Timing is synchronized to GPS time when available. If the GPS time is not then internal timing accuracy is:
6 min/year at 25° C
30 min/yr -20 to +40° C
47 min/yr -40 to +70° C
Available Sensors Mortality, Activity, Temperature, Low Voltage
Memory Capacity Capable of storing 100K fixes in nonvolatile flash memory in association with other sensor data.
Argos Transmissions System can be operated in a mode where unit transmits only during satellite overpasses based on the GPS location and the orbital parameters installed prior to deployment. (GPS-Argos systems only).

GPS Receiver Specifications

Standby Current 0µA
Performance 12 channels
-156 dBm tracking sensitivity
-142 dBm acquisition sensitivity
Datum WGS-84
Time to First Fix (TTFF) 40sec typical (with clear view of sky)

uGPSI-20 Argos Certified Transmitter Specifications

Operating Frequency ARGOS Frequencies
401.6300MHz to 401.6800MHz in 1 kHz Steps
Brazilian SCD-1, Channels C1 to C9
401.6180MHz to 401.6220MHz in 500Hz Steps
Frequency Stability +/- 0.5 ppm maximum from -30° to +70° C
+/- 2.0 ppm maximum from -40° to -30° C
Initial Frequency Error +/- 0.5 ppm maximum at +23°C, +/- 2° C
Aging +/- 2.0 ppm maximum after 1 year
RF Power Out Standard Power Version:
400mW (+26dBm) or 500mW (+27dBm) nominal into 50 Ω
(User selectable using TPP programming software)
Note 1: At +70°C, transmit current will increase by approximately 10% from the +25° C measurement. Conversely, at -40° C it will decrease by approximately 10% from the +25° C measurement.
Note 2: Transmit current and RF power out are sensitive to VSWR. Both can be degraded significantly if the antenna or antenna coax are of poor quality or not correctly tuned and matched to the ARGOS/Brazilian frequency band 50 ohm RF output impedance.
Spurs and Harmonics <-40dBc minimum, -60dBc typical (Coherent Spurious)
<-50dBc minimum, -60dBc typical (Non-coherent spurious)

TGM-4685 VHF Transmitter COMPONENT Specifications

Available Frequency Options Option 705 140-154 MHz;
Option 707 144-158 MHz;
Option 715 154-171 MHz;
Option 720 160-177 MHz;
Option 740 174-192 MHz;
Option 750 191-210 MHz;
Option 760 210-237 MHz
Note: The frequency can be programmed in 100Hz steps within a given frequency range.
Frequency Stability Better than ±3ppm at room temperature ±5 ppm total tolerance over full temperature range
Operating Temperature -40° to + 70° C
Pulse Width Programmable (10 to 250 msec)
Pulse Period Programmable (560 to 5000 msec)
3 separate pulse period values selectable:
Period 1 (indicates last GPS fix successful)
Period 2 (indicates last GPS fix unsuccessful)
Inactive period (if no motion for selected time)
Available Sensors Mortality Sensor (parameters are user programmable)
Transmitter Timing Programmable seasons and duty cycles.
Power Output Programmable Low/Medium/High Effective Isotropic Radiated Power
(EIRP) varies, depending on packaging, antenna configuration, and immediate environmental conditions.
* California Users: This transmitter meets the California requirement of EIRP<0.009W for all configurations.
Emission Designator 2k00P0N
Harmonic Suppression Better than 30dB (>40 dB typical)
Spurious Emissions <-35 dBc at 10 kHz offset from carrier
Frequency Aging: <2ppm/yr
Shock: <1ppm 3000g x 0.3ms x ½ sine x 3 dir
VSWR RF output stable to 10:1 VSWR, all phases
Radiated harmonic levels are degraded with poor load VSWR.
Spurious emission specification maintained for >10:1 VSWR
Programming Transmitter parameters programmable via antenna "1-pin" interface and Telonics TPP software.

TGM-4685 Packing/Housing Specifications Designed for application on sirenians. Units are contained in an O ring sealed housing which includes a flotation collar. Housing includes an eye-bolt mounted the nose cone which allows for attachment of a tether from the electronics to the study animal. Salt water switches are built in to the housing to allow the unit to detect diving behavior. The GPS antenna is integrated into the housing for protection. The external whip antenna system allows both ARGOS and VHF signals to be transmitted for data recovery and tracking purposes.

Lithium Battery Shipping Regulations

Telonics, Inc. ships all systems containing lithium batteries in accordance with United Nation and US Federal regulations for shipping hazardous materials.

49 Code of Federal Regulations
http://www.ecfr.gov/cgi-bin/text-idx?SID=e8334217c2c8d081457a5156872ad037&tpl=/ecfrbrowse/Title49/49cfrv2_02.tpl#0

IATA Dangerous Goods Regulations (current year)

Service Commitment

Since 1970, Telonics has built a reputation based on product quality, product support, service, and customer satisfaction. Telonics strives to produce the highest quality products, and to support those products accordingly.

Because of extreme conditions and the unpredictable nature associated with most telemetry applications, problems occasionally arise. Most problems can be resolved quickly. In all cases, we hope to be able to work in partnership with users to resolve problems to the user's satisfaction and to uphold our demonstrated commitment to excellence. If problems should arise, all products must be returned to our factory for failure analysis.

Warranty: GEN 4 GPS Systems

Telonics warrants its GPS products to be free from defects in material and workmanship for a period of one year from the date acquired. Telonics does not warrant batteries.

Telonics designs and manufactures systems for a variety of applications using several satellite systems (GPS, Argos, Iridium, and Globalstar). At the time of manufacturing, Telonics equipment is tested to verify compatibility with the applicable satellite system(s). Telonics does not warranty equipment against changes in satellite system specifications or satellite operation after the date your equipment was manufactured. Unforeseeable or unplanned system changes would include, but are not limited to, elevated ambient noise levels in the radio frequency bands used for satellite communications, elimination of service in a region of the world, data outages due to technical problems within the satellite system network, or reductions in data transfer capability due to alterations in the constellation as a result of premature space vehicle failures or failure to replace space vehicles in a timely manner.

If a defect occurs, return the equipment to us within the proper time frame at the following address: TELONICS, 932 E. IMPALA AVENUE, MESA AZ USA 85204-6699. The customer shall arrange for and pay all shipping, insurance and related charges incurred in the shipment to and from Telonics under this warranty. Damage to any equipment resulting from misuse, accidents, unauthorized service, extreme conditions, or other causes, is excluded from this warranty. Telonics does not assume responsibility for loss or damage to equipment during shipment. Telonics does not assume responsibility for delays resulting from shipment on commercial or private carriers. We insure all equipment shipped from our facility and suggest that shipments to Telonics also be insured.

Upon the timely return to our facility, if defective, the product will be replaced or repaired at our discretion at no cost to the customer. This remedy is the exclusive remedy. This product is supplied without any further warranties or conditions, expressed or implied, including warranties of merchantability, quality or fitness for particular reason or those arising by laws, statutes or trade usage or course of dealing. The entire risk, as to the results and performance of the product, is assumed by the customer. Neither Telonics, nor its suppliers, shall have any liability to the customer or any other person or entity for any indirect, incidental, special, or consequential damage whatsoever, regardless whether Telonics has been told of the possibility of such damages or that such damages might be foreseeable. Telonics has no responsibility or liability for the claims of any third party. The maximum aggregate to the customer, of Telonics and its suppliers, shall not exceed the amount paid by the customer for the product.