Amateur Radio and Regulatory Information

Regulatory Information

Amateur Radio Licensing and Legal Use

Certain Divimath video transmitters are intended for operation under amateur radio regulations. Radio-frequency laws vary by location, and it is the operator’s responsibility to understand and follow all rules applicable to the frequencies, power levels, equipment and operating mode being used.

United States Customers

This equipment is sold for operation under the Federal Communications Commission’s Amateur Radio Service rules in 47 CFR Part 97. Operation may require a valid amateur radio license. The operator must use only frequencies, power levels and operating modes permitted by the privileges of their license and all other applicable regulations.

Amateur radio equipment must not be operated on unauthorized or restricted frequencies. Unlicensed or otherwise unlawful operation may cause harmful interference and may expose the operator to enforcement action or monetary penalties.

By purchasing or operating this equipment, the user acknowledges responsibility for determining whether the intended configuration and use are lawful and agrees to operate the equipment in accordance with all applicable requirements.

Model-Aircraft Control Signals

Under 47 CFR § 97.215(c), an amateur station transmitting signals used to control a model craft must not exceed 1 watt transmitter power. This restriction concerns telecommand signals used to control the craft and should not be interpreted as a general 1-watt limit on every amateur-radio video or telemetry transmission.

Information about obtaining a U.S. amateur radio license is available from the American Radio Relay League .


International Customers


Licensing, frequency-allocation, output-power and equipment-authorization requirements differ by country. Use of this equipment may require an amateur radio license, may be limited to particular frequencies or power levels, or may be prohibited in some jurisdictions.

Before purchasing, importing or operating this equipment, the customer is responsible for confirming that the product and its intended use comply with all applicable national and local laws. Do not purchase or operate the equipment when you are uncertain whether its importation, possession or use is permitted.

Divimath, Inc. is not responsible for unauthorized, unlawful or improper operation of the equipment, or for penalties, losses, seizure, interference claims or other consequences resulting from a purchaser’s failure to comply with applicable regulations.


This page provides general product-use information and is not legal advice. Regulations may change, and users should consult the applicable regulatory authority for current requirements.

Proprietary ASICs

Divimath, Inc. stands at the forefront of FPV innovation, delivering products with the lowest latency in the world. This achievement is powered by Divimath’s proprietary ASICs, the result of years of intensive research and development and an investment of tens of millions of U.S. dollars. Unlike companies that rely on off-the-shelf solutions, Divimath designs and fully owns its custom chips, ensuring unmatched performance, reliability, and control over the technology stack.

  • Wireless video transceiver (BB)
    DM5680

  • 5~6GHz RF transmitter
    DM6300

  • 5~6GHz RF Receiver
    DM6302

  • Dual Channel Video Processor
    DM1618

  • Quad Channel Video Processor
    DM1675

FAQ

Q: How do Divimath NDAA-compliant products differ from HDZero products?

A: Divimath NDAA-compliant products are similar to the proven HDZero digital video system but are built specifically to meet U.S. government sourcing and compliance requirements. Divimath NDAA-compliant products add a key feature: encrypted digital video transmission. This encryption protects against unauthorized viewing and is exclusive to the NDAA-compliant product line. While Divimath NDAA products remain compatible with HDZero receivers when encryption is disabled, encrypted video streams can only be viewed using Divimath NDAA-compliant receivers. HDZero receivers cannot decode encrypted video from Divimath NDAA transmitters.

Q: What does NDAA compliance mean?

A: NDAA compliance ensures that our products meet U.S. government regulations regarding sourcing and manufacturing. Divimath's NDAA-compliant products are free from restricted components and are suitable for use in federal, defense, and other sensitive applications requiring secure supply chains.

Q: Where are Divimath products made?

A: Divimath products are manufactured in Thailand and owned by Divimath, Inc., a U.S.-based company. This provides transparency and security in our supply chain while supporting domestic engineering and support services.

Q: How does Divimath’s video system compare to analog?

A: Unlike analog systems, Divimath’s digital video technology eliminates image warping and color shifting, offering consistently clear visuals. Our system also offers similar range and predictable signal recovery, with none of the stutters or freezes common in other digital systems.

Q: What is the video latency of Divimath’s system?

A: Divimath’s video transmission offers industry-leading, sub-3ms glass-to-glass latency with no frame-to-frame variation—far lower than typical digital systems, which can have 30-200ms of delay.

Q: Can Divimath systems work with existing analog setups?

A: Yes. Our video systems include a built-in analog video receiver and HDMI input for seamless integration with existing infrastructure, making upgrades simple and cost-effective.

Q: How does Divimath's digital video encryption work?

Divimath digital link is encrypted using AES256.
Encryption occurs at the physical layer which means:

  • It is almost impossible to hack the link without a Divimath receiver
  • A Divimath receiver without correct password is not able to receive video

Encryption can be disabled if desired (e.g. at racing events).