GPS Marine Systems (TGM)

TGM-4410, TGM-4610 and TGM-4310
Three fully configured models designed specifically for marine applications are shown. Tubing provides strain relief and mechanical protection for the antenna assembly.

Our GPS/Argos marine units are a new generation of GPS products that offer many new features and performance upgrades. This new Gen 4 technology is built on our highly integrated uGPSi-20 electronics platform, which combines store on board, Argos, and VHF beacon functionalities into a single assembly to achieve a durable and highly shock resistant electronics subsystem.

Key Features

  • Utilizes a new hydrodynamic housing design.
  • Contain a GPS receiver to obtain high accuracy GPS positions when adequate surfacing time occurs. When surfacing characteristics prevent a standard GPS position from being obtained, the Quick Fix Pseudoranging (QFP) alternative provides GPS positions using a post processing technique on surface times as short as 5 seconds.
  • Data such as last dive time, dive count, maximum and average dive time, and percentage of time spent under water and temperature can be transmitted.
  • Can also be configured with a pressure transducer. Depth of a dive, profile of a single dive and percentage of time in user defined depth layers are can be acquired and transmitted.
  • On board satellite overpass predictions allow a highly efficient data transfer as units can be programmed to transmit only to specific satellites and only during times when the satellites are in view.
  • Up to 24 positions per day can be recovered through Argos by using the innovative paging date protocol.
  • In addition to transmitting the data via Argos, these systems also store all data on board the unit in non-volatile memory.
  • To increase data throughput the TGM-4xxx series supports a highly compressed data transmission called page data.
  • Real-time clock calendar (RTC) controls all timing functions and is recalibrated with GPS time to assure high accuracy event timing.
  • Lower current consumption provides an increase in operational life or an increase in performance during that same operational time frame.
  • A micro-power saltwater sensor (SWS) saves additional power and further extends the operational life of the unit.
    [More information about saltwater switch: ] The SWS is critical to successful performance of an Argos marine unit. Because radio frequencies are severely attenuated in salt water, any uplink transmissions while underwater are essentially wasted. The SWS functions to suppress transmissions while the unit is submerged thereby saving power. The SWS synchronizes uplink transmissions to resume at the precise time when a marine animal actually breaks the sea surface following a dive. By transmitting immediately upon resurfacing, the unit has the best chance of successfully getting uplink transmissions to available orbiting NOAA satellites. Further, the SWS can be used to determine a haul-out condition and shut down Argos transmissions during extended shore time to save additional energy.
  • Shutdown with a small magnet allows users to turn each of these configurations "on" or "off". When turned "off", TGM-4xxx series based units consume less than 12 µA. Given these low current levels, users can store their units for extended periods with minimal impact on operational life.
  • Units can be refurbished to their original condition at the factory.
  • All products can be programmed by Telonics Product Programmer (TPP) which uses a GUI interface. TPP makes it possible for users to program their own systems and simulate performance of the system prior to deployment.
    • On-board sensors can be activated or deactivated in the field. Data collection regimes and schedules can be altered as required. Sensor data can be enhanced or deleted from Argos uplink transmissions.
    • Transmission schedules can be modified.
    • Argos ID codes can be changed.
    • Argos uplink transmission power levels can be modified to extend operational life or increase the probability of signal reception at the satellite.
    • Argos uplink frequencies can be changed to frequencies in low noise channels to increase the chances of a successful uplink.
  • Data Decoding - Data are processed using the Telonics Data Converter (TDC), which provides complete data decoding of Argos DS files and supports complete memory downloading. TDC provides a comma separated value (csv) output file with time stamps for all data collected. TDC can also be run in the "batch mode" for hands off operation.
  • TDC allows you to plot GPS fixes and Argos locations with Google Earth.


GPS/Argos Systems

Model Dimensions L x W x H (in, cm) Unit Weight (g) Onboard Memory for Data Logging Low Power (mW) Low Power Operational Life (hours) Low Power Temp (°C) High Power (mW) High Power Operational Life (hours) High Power Temp (°C)
TGM-4310-3 3.9 x 1.81 x 1.38
9.9 x 4.6 x 3.5
153 Yes 400 (Typ) 3792 -40 to +70 500 (Typ) 3552 -40 to +70
TGM-4410-3 4.65 x 2.56 x 1.42
11.8 x 6.5 x 3.6
262 Yes 400 (Typ) 7104 -40 to +70 500 (Typ) 6720 -40 to +70
TGM-4510-3 5.91 x 2.87 x 1.77
15.0 x 7.3 x 4.5
449 Yes 400 (Typ) 13992 -40 to +70 500 (Typ) 13080 -40 to +70

Operational life is based on collecting 1 GPS fix per hour, 31 byte Argos transmission 12 hours per day, 75% of time spent under water, 45 seconds Argos repetition rate, standard power output and average temperature of 25° C, and uses scheduled GPS fixes to predict ARGOS satellite passes.

GPS/Argos Systems with Pressure/Depth of Dive Measurement Capability

Model Dimensions L x W x H (in, cm) Unit Weight (g) Onboard Memory for Data Logging Low Power (mW) Low Power Operational Life (hours) Low Power Temp (°C) High Power (mW) High Power Operational Life (hours) High Power Temp (°C)
TGM-4325-3 3.9 x 1.81 x 1.38
9.9 x 4.6 x 3.5
161 Yes 400 (Typ) 3792 -40 to +70 500 (Typ) 3552 -40 to +70
TGM-4425-3 4.65 x 2.56 x 1.42
11.8 x 6.5 x 3.6
269 Yes 400 (Typ) 7104 -40 to +70 500 (Typ) 6720 -40 to +70
TGM-4525-3 5.91 x 2.87 x 1.77
15.0 x 7.3 x 4.5
457 Yes 400 (Typ) 13992 -40 to +70 500 (Typ) 13080 -40 to +70

Operational life is based on collecting 1 GPS fix per hour, 31 byte Argos transmission 12 hours per day, 75% of time spent under water, 45 seconds Argos repetition rate, standard power output and average temperature of 25° C, and uses scheduled GPS fixes to predict ARGOS satellite passes.

Specifications: Electronic and Packaging

General System Specifications Show

Related Links to Information on Other Websites

Related Products

TDC Telonics Data Converter Telonics Data Converter (TDC) is used to convert raw data from Telonics transmitters into data reports and to display locations on Google Earth and Google Maps. You can review TDC reports in Microsoft Excel or other spreadsheet programs.

TPP Telonics Product Programmer Telonics Product Programmer (TPP) is a powerful software tool used to program Telonics transmitters, and Telonics CR-5 and CR-7 collar release mechanisms. TPP gives you the ability to modify aspects of your Telonics GEN4 GPS and VHF transmitters including data collection and transmission intervals. TPP is designed for ease of use, with simple point-and-click navigation through the program.

TSC-4A and TSC-7 Fast/Active Smart Cable The TSC-4A and TSC-7 are multi-use USB interface cable and features a USB A type computer connector and a male BNC (bayonet style) embedded device connector. The BNC connector allows quick and easy attachment of various embedded device adapters (available separately).

CN008351-001 Adapter Adapter, female BNC to alligator clips for use with the TSC-7A cable. This adapter is used for systems where programming/download connections are made using the antenna tip or saltwater switch buttons.

TSTR-4 Test Receiver The TSTR-4 provides transmit indication for Argos PTTs (401.650 MHz). Provides both a visual indicator and audio tone with each transmission. Operates on a standard 9 volt battery. Designed specifically for short range (2-3 feet) use with PTT.

Legacy Products

The information below is provided for individuals who are still deploying these older systems. Some of the system information or limitations, information on frequency allocation or usage, and/or comments made on "state of the art" may be time sensitive or even outdated. Please contact Telonics if you have any questions about the information provided in this section.

GPS/Argos Systems

GPS/Argos Systems with Pressure/Depth of Dive Measurement Capability

Legacy: General System Specifications Show

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

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.