Argos Implantable Avian Transmitters (IMPTAV)
Argos only, without GPS

The information below 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 Product descriptions may be time sensitive or even outdated.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.
Implantable Argos tags designed for avian applications.


Model Dimensions L x W x H (in, cm) Unit Weight (g) Battery Life, with transmissions 24 hours/day (days)11 Battery Life, with transmissions 4 hours/day (days)
IMPTAV-2630 2.41 x 0.88 x 0.65
6.12 x 2.24 x 1.65
35 50 300
IMPTAV-2640 2.44 x 1.26 x 0.67
6.2 x 3.2 x 1.7
45 75 425

1. Estimates of battery life are based on 250mW, 4-byte Argos transmissions with a 60-second repetition rate at 25°C. Argos transmissions are typically duty-cycled for an average of closer to the 4-hours/day example. Dimensions are exclusive of the antenna.

Key Features

  • These models are designed to be implanted in the body cavity of birds with the antenna extending out of the bird. They operate through the Argos System, which is a satellite-based system providing global coverage and particularly good performance in the polar regions. Animal locations are calculated using the Doppler-shift in frequency of the transmitter’s uplink transmission. (These units do not use GPS for location determination.)
  • Mortality, activity, temperature, and low-voltage sensors are available with all these models. Data can be collected according to user-defined parameters and schedules and transmitted through Argos.
  • Argos transmissions can be duty-cycled to extend battery life, and to schedule transmissions when the best overpasses are predicted. A real-time clock/calendar controls all timing functions.
  • Data retrieved through Argos are processed using the Telonics Data Converter (TDC). TDC provides complete data decoding of Argos DS files, including location and sensor data, and provides for plotting of locations in Google Earth.
  • Units are powered by primary battery. They are turned on or off using a magnetic switch. When turned off, these ST-26 based units consume less than 5.3µA.
  • Units can be refurbished to their original condition by Telonics.

Electronic Specifications

ST-26 (Argos Certified Transmitter) Specifications

Timing Accuracy6 min/year at 25° C
30 min/year -20 to +40° C
47 min/year -40 to +70° C
Available SensorsMortality, Activity, Temperature, Low Voltage. Salt water switch also available on select models.
Argos Operating FrequencyARGOS 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
Argos Frequency Stability±0.5 ppm maximum from -30° to +70° C
±2.0 ppm maximum from -40° to -30° C
Argos Initial Frequency Error±0.5 ppm maximum at +23°C, ±2° C
Argos Frequency Aging±2.0 ppm maximum after 1 year
Argos RF Power Out250mW (+24.0dBm ±2dB) standard, 150mW (+22.5dBm ±2dB) option, both nominal into 50 Ω
(User selectable using TPP programming software)
Argos Spurs and Harmonics<-40dBc minimum, -60dBc typical (Coherent Spurious)
<-50dBc minimum, -60dBc typical (Non-coherent spurious)

Related Products

Related Links to Information on Other Websites

Lithium Battery Shipping Regulations

Telonics Inc. ships all systems containing lithium batteries in accordance with the US Department of Transportation rules for hazardous materials set forth in 49CFR and the IATA Dangerous Goods Regulations.

Shipping dangerous goods can be complicated and confusing, consult a dangerous goods specialist if needed. The general requirements for shipping lithium batteries according to 49CFR are located in Part 173, Subpart 173.185 in the link below.

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: Argos Systems

Telonics warrants its Argos products to be free from defects in material and workmanship for the operational life of the unit up to a maximum of one year from the date acquired. Telonics does not warrant batteries.

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.