IMP-CHP-7P VHF Transmitter

Dimensions L x Dia (in, cm) Unit Weight (g) Transmitter Electronics Operational Life @ 60BPM (months) Operational Life @ 30BPM (months) Conventional Sensor Options
0.83 x 0.45 x 0.37
2.11 x 1.14 x 0.94
2.2 CHP 1.5 2.8 conventional S2 temp

Operational Life Information

Specifications for Transmitter Electronics

CHP Conventional Control Options

OPT. S2 Temperature Sensor. Sensor provides pulse rate which varies according to temperature within the transmitting subsystem. User specifies desired pulse rate at anticipated median temperature and approximate range of temperatures to be monitored. Pulse rate increases at higher temperatures and decreases at lower temperatures.

Cautionary Notes for Implantable Subsystems

1. Most Telonics implantable telemetry transmitting subsystems utilize an internal transmitting antenna structure. The structure is contained inside the packaging of the implant. This type of antenna can be tuned to either air or the dielectric of the body. The tuning choice will affect where (in air or in the body) the maximum range performance will be achieved. If the unit is tuned to air, the unit's best performance will be achieved when air surrounds the implant. If the implant antenna is tuned to the dialectic of the body, the best performance from the implant will be achieved when the implant is actually inside the body cavity. Note: When testing, it is necessary to place the implant in the medium in which it will be expected to operate. This is particularly true when trying to obtain more accurate range performance test data.
For extremely large bodied animals (over 100 pounds), it should be noted that the large mass reduces the effective radiated power of the implant, thereby reducing the range performance of the system. When implanting small terrestrial mammals, the implant is often carried only a few inches off the surface of the earth and thus the range is reduced because line-of-sight range is also reduced under these conditions.

2. Cold method sterilization should be utilized when sterilizing units prior to implantation. The physiological wax can melt with hot method sterilization techniques compromising the units' moisture repelling properties. Also note, units should be stored in a cool environment (such as a cooler) during transportation in vehicles, or kept in a cool environment during periods of storage.



Weight grams
PackagingDual water barrier




Minimum operating temperature0° C
Maximum operating temperature50° C
Operational life months @ 60 BPM and 25° C

1: Extended temperature ranges are available. Contact factory for details.

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: Implantable VHF Transmitting Subsystems

The Implantable VHF Transmitting Subsystem includes the following main components: internal digital and radio frequency electronics comprising the transmitter, power supply (battery), exterior packaging, physiologically compatible coating, and transmitting antenna. A refurbished Subsystem is warranted as if the Subsystem was purchased new, unless otherwise stated.

Telonics warranties only the following with respect to the Subsystem:
1.1 The "L" series standard implants are warranted in the following manner. The internal electronics (excluding batteries) are warranted to be free from defects in materials and workmanship and to perform to the operational specifications over the specified operating temperature range as published by Telonics for the rated operational life of the Subsystem (as recorded on the final test data sheet accompanying the unit), up to a maximum of one (1) year from the date of initial shipment of the Subsystem by Telonics.
1.2 The exterior packaging integrity of all implants with internal antennas are warranted for the full operational life of the Subsystem, up to a maximum of one (1) year from the date of initial shipment of the Subsystem by Telonics.
1.3 The exterior packaging integrity of implantable CHP subsystems with external antennas are warranted for the operational life of the Subsystem, up to a maximum of three (3) months from the date of initial shipment of the Subsystem by Telonics.

Although each Subsystem is supplied with a power supply in the form of a battery, Telonics does not manufacture batteries (electrochemical cells), and therefore cannot warranty the battery lifespan, mechanical integrity or other battery performance issues. However, Telonics conducts extensive testing of all types of electro-chemical subsystems to determine suitability to the application. Once an electrochemical system is chosen for a configuration, testing procedures are employed at Telonics to evaluate every individual battery that is installed in each transmitting subsystem. Even using these advanced testing procedures it is not possible to determine a specific battery's lifespan or mechanical integrity.

Telonics conducts tests to assure that each unit is transmitting at the power level selected by the user. Actual range performance is a system characteristic dependent upon numerous conditions including receiver sensitivity and noise figure, receiving antenna tuning and pattern, transmitter antenna integrity, line of sight conditions in the field, and vegetation and habitat conditions and other factors specific to individual study sites. Therefore it is not possible to warranty a minimum range that will be achieved for units deployed in the field.

"Packaging integrity" as applicable to 1.2 and 1.3 above, is limited to normal wear as encountered when implanted in the animal. Fatigue and/or breakage of the electrode leads used in heart rate transmitters are not covered under warranty.

It is the purchaser's obligation to make certain that it orders the correct size and type of Subsystem for the particular type and size of animal that the Subsystem will be applied to, and no warranty is expressed or implied for any failure to meet operational specifications due in whole or in part to use of an incorrect size or type of Subsystem.

No warranty is expressed or implied with regard to abnormal events or damage due to human actions such as gunshot damage, vehicle encounters, etc. Further, no warranty is expressed or implied with regard to damage resulting from misuse, accidents, unauthorized service, extreme conditions, or other causes not specifically enumerated herein.

The entire risk, as to the results and performance of the Subsystem, 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. Telonics' and its suppliers' maximum aggregate liability shall not exceed the amount paid by the customer for the Subsystem.

Exercising the Warranty
If a defect occurs, return the Subsystem to Telonics within the applicable time frame noted above at the following address: TELONICS, 932 E. IMPALA AVENUE, MESA AZ USA 85204-6699. 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. Customer shall arrange for and pay all shipping, insurance and related charges incurred in the shipment of Subsystems to and from Telonics under this warranty.

Upon the timely return to our facility within the applicable time frame noted above, if the exterior packaging integrity and/or internal electronics (excluding batteries) are defective, the Subsystem will be replaced or repaired, at Telonics' sole discretion, at no cost to the customer, other than shipping charges. 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 above warranty extends only to the original purchaser and does not cover any Subsystem which is resold or otherwise transferred from the original purchaser to another party. The warranty will be extended to customers who purchase the Subsystem directly from a Telonics-authorized distributor.