AT-HDTX ***Discontinued***

• • • Discontinued • • •

Model Number: AT-HDTX

The Atlona AT-HDTX is an HDBaseT™ transmitter for HDMI transmission over category cable. It provides an economical means of extending 1080p/60Hz video signals with embedded multi-channel audio up to 230 feet (70 meters) and 4K/UHD as far as 130 feet (40 meters). The transmitter features Power over Category cable (PoCc) for powering compatible Atlona receivers. The AT-HDTX is ideal for budget-friendly, long distance transmission to displays in meeting rooms, educational settings, and residential environments when display control isn’t needed.

Replaced with AT-HDTX-IR

HDMI Over HDBaseT Transmitter

HDMI Over HDBaseT Transmitter

The Atlona AT-HDTX is an HDMI Over HDBaseT Transmitter that transmits HDMI signals up to 230 ft (70 m).


Long distance HDMI extension

  • Transmits HDMI signals up to 230 ft (70 m) @ 1080P and 130 ft (40 m) @ 4K/UHD using CAT6a/7 cable
  • Uses easy-to-integrate category cable for low-cost, reliable system installation

Power over Category cable for remote-powered HDBaseT receiver

  • Provides remote power to Atlona HDRX Series and HDWP Series receivers over the same category cable used for AV and control signals
  • Eliminates local AC outlet required at receiver, cleans up the installation behind displays, plus saves time and integration costs

HDCP 2.2 compliant

  • Adheres to latest specification for High-bandwidth Digital Content Protection
  • Allows protected content stream to pass between devices

Field updatable firmware

  • Front panel USB port provides an easy means for kit upgrades
  • Ensures long term system return on investment

Front panel power and status LEDs

  • LED indicators provide Power and Link status information
  • Provides easy setup and troubleshooting

Multi-channel audio compliant

  • Supports PCM, Dolby® Digital, Dolby Digital Plus™, Dolby TrueHD, Dolby Atmos®, DTS Digital Surround™, and DTS-HD Master Audio™
  • Allows any multi-channel audio stream to be used within a professional audio system

CEC pass-through

  • Allows Consumer Electronics Control commands – if implemented – to pass between devices
  • Simplified user control of entire system with one remote

Recommended accessories:

  • AT-HDRX – PoCc, audio, and video
  • AT-HDWP – US wall plate with PoCc, audio, and video
  • AT-HDWP-UK – UK wall plate with PoCc, audio, and video

Compact, 1 in (25 mm) high and 2.9 in (73 mm) wide enclosure

  • Easy installation into system racks and confined spaces
  • Saves rack space and keeps devices out-of-sight when placed in public spaces

Mounting hardware included

External, international desktop power supply

Award-winning 10 Year Limited Product Warranty

  • Ensures long-term product reliability and performance in residential and commercial systems
  • Specify, purchase, and install with confidence

Atlona Academy – Extenders Best Practices

AT-HDTX-IR and AT-HDRX-IR Basic Features

AT-HDTX and AT-HDRX Basic Features


Video 480i@60Hz, 480p@59.94/60Hz, 576i@50Hz, 576p@50Hz, 720p@50/59.94/60Hz, 1080i@50/59.94/60Hz, 1080p@23.98/24/25/29.97/30/50/59.94/60Hz, 3840×2160@24/25/30Hz, 4096×2160@24Hz
VESA 800×600@60/75Hz, 1024×768@60/75Hz, 1280×768@60/75Hz, 1280×800@60Hz, 1280×1024@60/75Hz, 1366×768@60Hz, 1400×1050@60Hz, 1440×900@60/75Hz, 1600×900@60Hz, 1600×1200@60Hz, 1680×1050@60Hz, 1920×1200@60Hz
Colorspace RGB, YCbCr 4:4:4, YCbCr 4:2:2
Color depth 8-bit, 10-bit, 12-bit
Formats PCM 2Ch, LPCM 5.1, LPCM 7.1, Dolby Digital, DTS 5.1, Dolby Digital+, Dolby TrueHD, DTS-HD Master Audio
Sample Rate 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
HDMI up to 10 meters up to 30 feet
CAT up to 40 meters (@4K) up to 130 feet
CAT5e/6 up to 60 meters (@1080p) up to 197 feet
CAT6a/7 up to 70 meters (@1080p) up to 230 feet
Bandwidth 10.2 Gbps
HDCP Compliant
Operating 0°C to 40°C 32°F to 104°F
Storage -20°C to 60°C -4°F to 140°F
Humidity 20 to 90% non-condensing
Consumption 9.1
H x W x D 24.32 x 73.09 x 70.01 (mm) 0.96 x 2.88 x 2.76 (inch)
Device 0.10kg 0.23lbs
Shipping 0.20kg 0.45lbs
Unit CE, FCC


Features 3D, 4K, 1920×1200, Dolby TrueHD, DTS-HD Master Audio
HDBaseT PoCc, 3D, 4K, 1920×1200, Dolby TrueHD, DTS-HD Master Audio
Mini USB
Use Firmware updating

Package Contents

QTY   Item
1   24V DC power supply adaptor
1   Captive screw connector (2 pin: Power)
1   Pair of wall/rack mount ears
1   User manual


pdf-icon Manual
pdf-icon DataSheet

Diagrams, Drawings & CAD Files

cad-icon-(1) CAD Files


pdf-icon FAQ


pdf-icon Case Study

Declarations Of Conformity

pdf-icon Declarations Of Conformity

Related Products

AT-HDRX Atlona HDBaseT Receiver over a Single Category Cable
AT-HDDA-2 Atlona 1 x 2 HDMI Distribution Amplifier
AT-HDDA-4 Atlona 1 x 4 HDMI Distribution Amplifier
AT-H2H-44M Atlona 4 by 4 HDMI Matrix Switcher

Similar Products

AT-HDTX-IR Atlona HDBaseT Transmitter over a Single Category Cable w/IR
AT-HDTX-RSNET tlona HDBaseT TX Box for HDMI w/Ethernet, RS-232 and IR
AT-HDTX-WP Atlona HDMI to HDBaseT Transmitter Wall Plate

AT-HD-Extenders Firmware

  Download   Firmware version 2.30.90.C w/Low power   Download   Firmware version 2.30.90.C
  File Size   1530 KB   File Size   1530 KB
  Date   10.06.14   Date   10.06.14

Update 2.30.90.C_Lp Includes:

  • Energy saving mode – when no signal is passing the device turns off.
  • Enhanced 4Kx2K stability

Update 2.30.90.C Includes

  • Factory Firmware – No power saving mode

    Use with select TVs that are incompatible with power saving mode

  • Enhanced 4Kx2K stability