Teradek Spark 4K TX Transmitter - 10-1856

Spark 4K is Teradek’s latest consumer-level wireless video system that is capable of transmitting untethered local 4K HDR video at a range of up to 500 feet line-of-sight over the unlicensed 5GHz band.

Spark 4K can multicast to up to two Spark 4K receivers simultaneously, has portable power, internal antennas and a compact design making it truly wireless.

£774.00 £645.00
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Teradek Spark 4K TX Transmitter - 10-1856


  • Includes: 1 TX
  • Video: Up to 4Kp30
  • Range: 500 ft.
  • Inputs: 1x HDMI
  • Multicast: Can connect one transmitter to up to 2 receivers
  • Compatibility: Spark 4K RX

Built on award-winning tech. Built for reliability. Built with your A/V needs in mind.

Spark 4K TX is a wireless transmitter that sends video signals up to 4Kp30 via HDMI, at a distance of up to 500 ft line-of-sight, with less than 1ms of delay.* Transport your 4K HDR video from the source to the screen with no perceivable delay.

Unleash high-quality, zero-delay wireless A/V transmission for conferences, live events, worship services, sports, and more.

Key features include dual-powering options for backup battery redundancy, lightweight design, signal status and pairing with the Launchpad desktop and mobile app, and multicast transmission

Zero-Delay Signal Integrity

Transmit video with less than 1ms of delay.


Get wireless coverage for up to 500 feet of range. Now, your computers, cameras, switchers, and gimbals are all within range with robust wireless connectivity.

4K HDR Colour

Maintain premium video quality at 10-Bit 4:2:2 colour sampling.

Smart Transmission

Transmit in crowded areas with confidence. Spark 4K uses the 5GHz frequency for less sensitivity to line-of-sight obstructions, and smart frequency hopping to automatically find a clear channel.

Lighter than lightweight

Spark TX weighs just 5.6oz, perfect for on-the-move camera work.

Video Processing

Visually Lossless

Audio Processing

48kHz 24-bit PCM

TX Internal Battery Life

Up to 2 hours.

Transmitter tested at 125 mins when transmitting at 1080i59, 104 mins when transmitting at 4Kp30.

Common workflows using Spark 4K 

Professional A/V (conferences, tradeshows, pop-up events) Workflows:

Computer > Spark 4K > Consumer TV/Projector (Up to 2 sources)

Computer > Spark 4K > Graphics Processors > Projector

Computer > Spark 4K > Video Mixer

Camera > Spark 4K > Switcher > Consumer TV/Projector

Camera > Spark 4K > Switcher > Live Stream

House of Worship Workflows

Computer > Spark 4K > Consumer TV/Projector (Up to 2 sources)

Camera > Spark 4K > Monitor/Projector

Camera > Spark 4K > Switcher

Live Sports Workflows:

Camera > Spark 4K > SwitcherCamera > Spark 4K > Monitor (For coaches)

Live Event (weddings, funerals) Workflows:

Camera > Spark 4K > Switcher

Switcher Program Output > Spark 4K > Live event monitor/projector


Spark 4K TX

Video -

Video Inputs

  • 1x HDMI 1.4b Type-A receptacle

Colour Sampling

  • RGB 4:2:2, 10-bit

Delay Tx To Rx

  • <0.001sec (without format conversions)

Supported Resolutions -

Supported Resolutions

  • 4Kp23.98/24/25/29.97/30 1080p23.98/24/25/29.97/30/50/59.94/60 1080i50/59.94/60 720p50/59.94/60 480p50 576p59.94/60

Video Processing -

Video Compression

  • Visually lossless

Audio Processing -

Audio Compression

  • 48kHz 24-bit PCM

Inputs -

Audio Input

  • Embedded HDMI Audio Input (2 channel)

Physical -


  • 3.44” x 2.66” x 1.22” (87mm x 68mm x 31mm)


  • 158g (5.6 oz)


  • ABS Plastic


  • Multiple mounting options with M3 and 1/4-20” holes

Interfaces -

Configuration Interfaces

  • OLED display - Input video format, Selected frequency, Video Quality % , Link status


  • On/Off Switch

Mobile App

  • Launchpad App

Desktop App

  • Launchpad application for OSX & Windows

USB Interface Functionality

  • Upgrade via Micro-USB

External Control

  • Enable/disable Bluetooth


  • 2.4 GHz

Network -


  • DFS Frequencies: 5.270 ~ 5.670 GHz Non-DFS Frequencies: 5.190 ~ 5.230 GHz and 5.755 ~ 5.795 GHz

Rf Channel Selection

  • Auto only, 40 MHz only, no blocked frequencies


  • AES-128, RSA-1024 key exchange

Rf Power

  • 19 dbm EIRP (<80mW transmit power)


  • Up to 500 ft line of sight

Unicast Multicast

  • Can connect one transmitter to up to 2 receivers

Noise Rejection

  • Can coexist with Wi-Fi and 5GHz cordless phones, and can operate up to 4 sets in same location

Power -

Power Input

  • USB-C power input


  • Internal 9.5Wh battery (1.5hr run time)

Nominal Power Consumption

  • 5 Watts

Environmental -

Operating Temperature

  • 0~40 deg-C

Teradek Spark 4K - 4K HDR Wireless Transmission Made Easy

Teradek Spark 4K: The Zero-Delay 4K Wireless Transmission for A/V