Product Ranges
IP Surveillance, CCTV, Intercoms, Transmission, Security Services, Police Equipment
Contact Us
  • Shenzhen Safe Guard CO.,LTD

  • Country: China
  • City: Shenzhen
  • Address: 9C-21L Baoneng Hi-tech Industrial Park, Longhua New Dist.
  • Contact Person: Cola Zhou

Key Specifications
soldier communication wireless long range outdoor video audio data link

Model: SG-S20


The powerful video transmitter SG-S20 is a full featured digital wireless video audio communication system which adopts the latest technologies of COFDM modulation and H.264 image compression that enables stable NLOS (Non line-of-sight) transmission with DVD quality video. The transmitter is compact size with strong power amplifier for long range transmission, and good heat resistant with two cooling fans, performs well in fast-moving tactical transmission and highly secured with AES encryption.


● COFDM modulation, stable transmission

● H.264 video compression, DVD video quality

● Strong casing with built-in two cooling fans

● Mobile and NLOS transmission

● AES encryption with user-defined password

● Low system latency

● Modular design, compact structure, OEM design

● Can be customized to add additional features


Frequency: 300-4400MHz

RF power: 10-20Watt

Power supply: DC11-14.5V/2.7A (aviation plug)

Modulation: COFDM 2K QPSK

RF Bandwidth: 2/2.5/4/8MHz(adjustable)

FEC: 1/2 2/3 3/4 7/8 (option)

Guard Interval: 1/32 1/16 1/8 1/4(option)

Data Encryption: AES 128/256 Bits

Max speed: 450km/h

Video input: BNC/RCA, HDMI

Audio input: standard Aviation plug, support two-way intercome

Video compression format: H.264

RF Interface: N (two aerial connectors)

Work environment: -40℃~70℃

Case Material Aluminum: black

Size: 200*130*60mm

Weight: Customizable


For more information please email to

soldier communication wireless long range outdoor video audio data link
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