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Teradek Bolt 4K LT MAX TX

Abel Code: TER-10-2221
Mfr. Code: 10-2221
Estimated to Ship Contact Sales For ETA
The Bolt 4K LT MAX TX is a real-time wireless video transmitter that supports video signals up to 4Kp30 via HDMI, and 1080p60 via SDI, at a distance of up to 5000+ feet line-of-sight, with less than 1ms of delay.
Key Highlights
  • Zero-Delay 4K wireless video
  • 4K HDR with 10-bit 4:2:2
  • Small form factor


The Bolt 4K LT MAX TX is a real-time wireless video transmitter that supports video signals up to 4Kp30 via HDMI, and 1080p60 via SDI, at a distance of up to 5000+ feet line-of-sight, with less than 1ms of delay. 

Key features include increased range with faster reconnection times, easier setup with Bluetooth App for iOS or Android, and unlimited receivers using broadcast mode. These devices are cross-compatible with the entire Bolt 4K Family.

Bolt 4K Wireless BB3 Chipset

  • Better image quality at all resolutions
  • Stronger link robustness
  • Pairs with up to 6 receivers (unlimited receivers in broadcast mode)
  • RX and TX compatible with all Bolt 4K products

Transmit extended camera metadata, timecode, and start/stop flags

Universal compatibility with all Bolt 4K Series (Bolt 4K and 4K LT) devices

Ultra-fast pairing and intuitive setup with Bolt Manager App

Enhanced AES-256 and DFS encryption prevents unauthorized access

Bolt Manager App for TX/RX pairing, LUT output control, and signal monitoring

Real-Time 4K Wireless Video
Transmit uncompressed video in 1080p and 2160p at 60FPS with less than 1ms of delay. Up to and beyond 5000 feet of range.

True HDR Color
Supports 10-Bit 4:2:2 

Improved Wireless Performance
Reliable signal transmission over 13x 40MHz frequencies, with upgraded hardware and less image break-up than previous Bolt generations. Faster reconnection times, automatic signal quality switching, and a more robust frequency hopping algorithm. An additional 5GHz radio frequency link is available for high-traffic locations with excessive interference from other wireless devices.

Rock-Solid Reliability
Bolt 4K features 8x the wireless performance of previous Bolt generations, ensuring video is delivered in even the toughest of RF environments.

Universal Compatibility
Send signal to any Bolt 4K series RX device for expanding workflow requirements.

Broadcast Mode
Supports Broadcast Mode which means you can connect unlimited receivers simultaneously. Broadcast mode also can increase your wireless video range to 5000 feet and beyond with the next-generation Array 4K Panel Antenna.

Input: 1x HDMI 2.0 (up to 4Kp30), 1x 3G-SDI (up to 1080p60)
Output: 1x 3G-SDI (up to 1080p60)

Camera Metadata
Send start / stop flags, timecode, and other ancillary data over the wireless link. On the receiver side, upload and apply custom 3D LUTs to monitor each take with the look you’re after.

Bolt App for iOS
Remotely pair units, configure settings, and utilize all of Bolt 4K’s features from any iOS smartphone or tablet. The Bolt App uses Bolt 4K’s integrated Bluetooth to give you all of its settings in the palm of your hand. LUT/Color processing is not available through the Bolt App

Technical Specifications

Video Inputs

  • 3G-SDI SMPTE 424M standard/75 Ω (BNC x 1),
  • 1x HDMI 1.4b Type-A receptacle

Video Outputs

  • 3G-SDI SMPTE 424M standard/75 Ω (BNC x 1)

SDI Ancillary Data Support

  • Supports transmitting metadata, timecode, and start/stop flags from most camera manufacturers.

Color Sampling

  • SDI: YCbCr 4:2:2, 10-bit/ HDMI: RGB 4:4:4, 8-bit

Delay Tx To Rx

  • <0.001sec

Input Cross Conversion

  • Yes, HDMI to SDI (4Kp30 HDMI input is scaled and looped out as 1080p30 on SDI loopout)

Supported Resolutions

  • 4Kp23.98/24/25/29.97/30(HDMI only)
  • 1080p23.98/24/25/29.97/30/50/59.94/60
  • 1080psf23.98/24/25/29.97/30
  • 1080i50/59.94/60
  • 720p50/59.94/60
  • 480p50 576p59.94/60
  • 480i(NTSC)/576i(PAL)

Video Compression

  • Visually Lossless

Video Format Conversion Support

  • Connect an HD source to the Tx and get a 4K signal out of Rx
  • Connect a 4K source to the Tx, get HD resolution out of Rx
  • You can also mix & match from a single source:
  • 4K signal into Tx can be 4K output from 1x Rx and HD output from a 2nd Rx
  • Input/output configurations are controlled directly on units or via Bolt 4K app

Color Correction

  • None

Audio Format

  • 48kHz 24-bit PCM

Audio Input

  • Embedded SDI/HDMI Audio Input (2 Channel)

Audio Output

  • NA


  • 2.4” x 4.1” x 1.3” (60 x 103 x 33mm)


  • 7.3oz (206g)


  • Milled Aluminum(Chassis) and regulation-compliant PCB


  • Multiple mounting options with 1/4"x20 and M3 holes

Configuration Interfaces

  • OSD with Menu, Joystick Navigation


  • On/Off Switch

Mobile App

  • Bolt App

Desktop App

  • Bolt Manager application for OSX & Windows

Usb Interface Functionality

  • Upgrade via Micro-USB


  • 2.4 GHz


  • 2x External 2dBi antennas (included)


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

Channel Bandwidth

  • 13x 40MHz wide channels

Rf Channel Selection

  • Auto, Manual
  • Manual available for non-DFS Channels


  • AES-256, RSA-1024 key exchange

Rf Power

  • 19 dbm EIRP (2x external 2dBi antennas; <80mW transmit power


  • Up to 3000 ft line of sight (5000 ft with optional Bolt 4K Array Antenna)

Unicast Multicast

  • Can connect one Transmitter to up to 6 Receivers

Noise Rejection

  • Can coexist with WiFi and 5GHz cordless phones
  • Can operate up to 6 sets in same location

Power Input

  • 2-Pin Circular locking Connector 6-28 VDC


  • None, optional Gold or V mount battery plate

Nominal Power Consumption

  • 9 Watts

Operating Temperature

  • 0-40℃

What's in the Box

  • Antenna 2dBi H Mushroom V4.9-7.3Ghz RP-SMA
  • Antenna 2dBi V4.9-7.3GHz RP-SMA
  • 6 Foot 2-pin Lemo to 18W AC Adapter (International)
  • 10 Inch SDI BNC to SDI BNC Cable
  • 18 Inch Ultra Thin HDMI Male Type A to HDMI Male Type A Cable
  • 3 Foot USB Male Type A to USB Male Type B Cable
  • 18 Inch 2-pin Lemo to P-Tap Cable
  • Wooden Camera V-Lock Base Station and Wedge Kit ⅜-16 Mount
  • Bolt 4K LT MAX TX


Key Highlights

  • Zero-Delay 4K wireless video
  • 4K HDR with 10-bit 4:2:2
  • Small form factor
  • Durable, ruggedized construction
  • 5,000 feet of range
  • 4Kp30 with HDMI; 1080p60 with SDI
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