WyreStorm HDMI Over SDI Dual Output Transmitter with 2-Way IR, RS232 (50m/164ft)

Part Number TX-SDI-50

Transmitter Only - Receiver sold separately.

The WyreStorm TX-SDI-50 is single cable, dual output HDMI over SDI transmitter capable of delivering two separate feeds of lossless 1080p HD video@60Hz and multi-channel HD audio to receivers up to 50m (164ft) using copper-core 75Ohm coax.

The TX-SDI-50 features full 3D compatibility and 24bit True Color with wide-band, two-way control from either source or display (when paired with the RX-SDI-50) location via IR and RS232 with full support for leading third party control systems.

Key features include:

  • Dual SDI outputs on transmitter provide two synchronous feeds
  • Full 1080p, full 3D and HD audio compatible
  • Embedded EDID functions
  • 2-way IR and serial control

Note:   SDI Receiver (RX-SDI-50) sold separately - both units are required to funtion as an extender set.


The WyreStorm TX-SDI-50 is single cable HDMI over SDI point-to-point transmitter capable of transmitting lossless 1080p HD video@60Hz and multi-channel HD audio up to 50m (164ft) using copper-core 75Ohm WF100 coax cable. 

The TX-SDI-50 features full 3D compatibility and 24bit True Color with wide-band, two-way control from either source or display (when paired with RX-SDI-50) location via IR and RS232 with full support for leading third party control systems.

The TX-SDI-50 is designed for residential or ProAV applications where use of coax to distribute and control HD signals is either required due to retrofit installations where existing coax cabling infrastructure must be used, or preferred for its low loss at high frequencies; vital for cable/satellite television, cable modem installations as well as commercial applications such as security/surveillance, broadcast television and film production in studio or location, video conferences, electronic teaching, in fact, any and wired network area where the extension and amplification of SDI transmission is needed.

Featuring twin synchronous SDI outputs, a signal can be sent in two different directions to create a cascadable splitting system feeding different locations by pairing a single transmitter with multiple receivers (RX-SDI-50), with a SDI loop out on each receiver (sold separately) enabling the daisy-chaining of several receivers to create larger, multi-location distributions. 

The TX-SDI-50 fully supports 3D transmission and includes embedded EDID functionality to manage the EDID handshake between devices to aid communication and help avoid compatibility issues that can effect successful signal transmission.


  • Single coax cable as a substitute to HDMI cable to achieve scaleable long-distance transmission of full HD video, audio and two-way control
  • Full HD support 1080p@50/60Hz
  • 1080p transmission distance up to 50m/164ft (75Ohm WF100 coax cable) under recommended conditions* 
  • 24bit colour depth
  • Fully 3D compatible - frame packing/sequential (Blu-Ray), interlaced stereoscopic (satellite/cable broadcasts)
  • Wide-band, bidirectional infrared control signal of source from display and display from source locations transmitted together with the HDMI signal
  • RS232 control signal transmissions supported
  • Dual SDI outputs on transmitter provides two synchronous feeds that enables signal to be split and fed to different locations
  • SDI loop out on receiver (RX-SDI-50 sold separately) allows transmission to be cascaded by daisy-chaining up to 7 receivers to further lengthen distribution from a single output distances up to 350m/1148ft.  NOTE - IR and RS232 control is capable only capable to the first tier, if daisy-chained together.
  • EDID management on transmitter / DIP Setting on receiver to assist communication between source/display and avoid compatibility issues
  • HDMI V1.4 supported
  • Each port supports HDMI or DVI signals
  • Auto-adjustment of feedback, equalization and amplification
  • HDCP compliant 
  • LED indication of power and signal status
  • Contains ESD protection technology to safeguard against static build-up that can damage circuitry
  • Mini-USB port for firmware upgrade 
  • Units can be cascaded up to 7 times to create larger distributions
  • Mounting brackets supplied for secure installation
  • IR emitter, receiver and 5v mains power supply included

*Recommended transmission conditions denote - straight cable run within specified distance range of product, no electrical interference and the use of solid copper core cable with no bends, kinks or mid-run connections. 

Please be advised that the presence of any of these factors in your installation may compromise bandwidth and signal strength. 

In the Box

TX-SDI-50 Transmitter

Printed user manual (also downloadable from this web page)

1 x 5V 3A DC power supply

1 x IR TX emitter (for connection to source)


118mm/4.6" x 25mm/0.98" x 157mm/6.2"
0.92Kg / 2.02lb (pair)
-5 to +35°C (-41 to +95 °F)
5 to 90 % RH (no condensation)
0.5-1.0 volts p-p
5 volts p-p (TTL)
1080p 24bit colour depth
50m / 164ft (75Ohm WF100 coax cable)

DTV/HDTV: 640x480p 60Hz, 800x600 60Hz, 1024x768 60Hz, 1280x768 60Hz,1360x768 60Hz, 1280x960 60Hz, 1280x1024 60Hz, 1400x1050 60Hz, 1440x480i 60HZ, 720x480p 60Hz, 1440x576i 50Hz, 720x576P 50Hz, 1440x576P 50Hz, 1280x720p 50Hz/60Hz, 1920x1080i 50/60Hz, 1920x1080p 24/25/30/50/60Hz, 1280x720p 3D 50/60Hz, 1920x1080i 3D 50/60Hz, 1920x1080p 3D 24Hz


5.1 / 7.1 / stereo audio (including PCM and non PCM, HD Audio, etc.)
5V/3A DC
7.5W (TX-SDI-50) 8W (RX-SDI-50)