CHD - DVB-T/Narrowband COFDM Video Transmitter

Compact, Full HD DVB-T compliant COFDM video transmitter that does it all.
UHF/900MHz, 1.9-2.6Ghz or 5GHz in bands with 100-500mW output. 3G-SDI or HDMI input. 1080p video with 2 frame latency, H.264 codec and embedded serial. 9-30VDC input in an ultra rugged enclosure, or in bare board format for easy integration.

CHD is ideally suited for Aerial and Ground robots, as well as for surveillance and industrial applications.

DVB-T channel width (6/7/8MHz) or narrowband operation (1-5MHz) and optional amplifying options with up to 5W of RF output.

Receiver options include HDMI/HD-SDI out with diversity reception, IP out or USB for Linux, Windows, and MacOS

Operating mode

COFDM (DVB-T/Narrow)

Channel width

1-8MHz

Power output

100mw-500mW

Modulation

QPSK/16QAM/64QAM

FEC

½ 2/3 ¾ 5/6

Tuning steps

1KHz

Encryption

AES 128/256

Codec

H.264 / MPEGII

Video input

HDMI / HD-SDI

Resolution

Up to 1080p60

Audio

Embedded Data

Dimensions (bare board/ enclosed)

Embedded or External

Serial, up to 915kbps

85x50mm / 110x60x25mm

Operating Temperature

-40 to +40C

Power

7-30VDC, 10W@100mW output

COFDM in a nutshell

COFDM (Coded Orthogonal Frequency Division Multiplexing) video transmission technology is widely used in the transmission of video signals from bomb disposal robots to their operators. COFDM is a highly reliable method of transmitting high-quality video signals over a long range, making it ideal for use in hazardous environments such as bomb disposal scenarios. COFDM allows the robot to transmit real-time video feed to the operator, providing them with a clear view of the situation and helping them to make informed decisions.
COFDM is also highly resistant to signal interference and distortion, which is essential in bomb disposal scenarios where the transmission of video signals may be disrupted by external factors such as building structures, electromagnetic radiation, or other sources of interference. With COFDM, the robot can transmit video signals over a long distance without experiencing significant signal loss, making it easier for the operator to control the robot and respond to the situation effectively.
In addition to its reliability and resistance to interference, COFDM also allows for encryption and decryption of video signals. This feature is crucial in bomb disposal scenarios, as it ensures that sensitive information is not intercepted by unauthorized individuals. By encrypting the video signals, operators can transmit sensitive information securely and ensure that it remains confidential, further enhancing the safety and security of bomb disposal operations. Overall, COFDM video transmission technology plays a crucial role in bomb disposal robots by providing reliable, secure, and high-quality video signals that allow operators to carry out their tasks safely and effectively.
More sources on DVB-T
https://en.wikipedia.org/wiki/DVB-T
https://dvb.org