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Have a question about your KVH product? No problem – just use the tools below to find information and troubleshooting tips for your product 24 hours a day, 7 days a week.

If you can’t find an answer to your question here, please contact the KVH support team.

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The T-FOG Upgrade improves target location from 300+ meters to 75 meters at 5 km range.
Compass calibration will be required whenever the TACNAV-equipped vehicle travels into another magnetic latitude. If, for example, the vehicle is airshipped to another field of operation, calibration would be required. TACNAV features a display that will indicate when the calibration is questionable.

Please click here for easy, online product registration. This form may be used by all customers and is automatically customized based on your selected country.

If you choose not to use the convenient online form, every KVH product also includes a printed product/warranty registration form that you may fill out and return to the address listed on the form.

Your KVH product is covered by its warranty automatically from the date of purchase. This warranty will be honored by authorized KVH technicians, installers, distributors, and dealers worldwide. Complete details regarding all KVH product warranties are available on our Warranty pages.

Both TACNAV Light and TACNAV TLS provide critical navigation data to military vehicles worldwide, with dead reckoning capability of 2-3% distance traveled. TACNAV Light is designed for use aboard non-turreted vehicles, such as those in the infantry carrier, command and control, scout, HMMWV, smoke, and ambulance fleets. TACNAV TLS is designed for turreted vehicles, and is capable of linking to a laser range finder to provide far target location to within >300 meter at 5 km. In addition, TACNAV TLS can be upgraded with the T-FOG Upgrade, which adds fiber optic gyro precision and accuracy to this field-proven system.

Complete specifications for the TACNAV TLS system can be found in the product brochure available for download from the TACNAV TLS product page.

The Integrated CommBox Modem (ICM) is the streamlined all-in-one belowdecks unit that drives the TracPhone V7-HTS. It features a browser-based user interface and a convenient iPhone® app for system status, updates, and support. Replacing a full rack of components required for competitors’ systems, the 2U-high ICM contains:
  • IP-enabled antenna control unit
  • CommBox™ Network Manager
  • High-throughput modem
  • Voice over IP (VoIP) adapter
  • Built-in Wi-Fi and Ethernet switch
  • Content storage and access for IP-MobileCast™ and Videotel™ training content
  • Support for over-the-air software updates for the ICM and antenna unit
KVH offers three TACNAV systems that offer a range of functionality and compass heading accuracy. Compass heading accuracy is also dependent on the quality of the compass calibration. The typical accuracy for each system follows:

TACNAV Light: 2-3 degrees compass heading accuracy

TACNAV TLS: 2-3 degrees compass heading accuracy

TACNAV TLS with the T-FOG Upgrade: 0.5 degrees compass heading accuracy

TACNAV II: 0.5 degrees fiber optic gyro heading accuracy

For additional information on the TACNAV family of products and KVH's other military systems, visit the military products page.

KVH is pleased to offer world-class support and warranty coverage for all of its products. Complete details regarding all KVH product warranties are available on global support pages.

Yes, this information can be automatically provided by GPS or manually entered if GPS is not available.
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