HDMI Modulator | QAM RF Coax Output - Full HD up to 1080P - 1,4,8 Channel

Models:
PN: H-THUNDER
12 HDMI model description
The Thor Broadcast H-Thunder-12 is a compact 12-channel HDMI encoder modulator that converts up to 12 HDMI sources into digital RF signals (ATSC or QAM) for distribution over coax. It supports Full HD resolutions, MPEG-2 encoding, and multiplexes 12 inputs into 4 RF frequencies (3 programs per frequency), making it ideal for efficient CATV, hospitality, or digital signage applications. Easy setup via LCD, Ethernet NMS, or wizard mode.
Description

H- THUNDER- Supports up to 8 HDMI inputs and its modular design (maximum 8 HDMI inputs) and flexible configuration makes it scalable and very reliable while providing high performance.

The signal source could be from any STB, satellite receiver, closed-circuit television camera, and antenna, etc. Its output signal is designed to work with any TV or STB. Because it comes standard with every RF modulation standard built in, this device can work anywhere in the world in a plug-and-play format. 

This unit is similar to our popular line H-1,2,4 HDMI-QAM-IPLL product line, but it has some differences.It is a less expensive unit, each program is modulated on its own frequency, CATV RF output only, with no IPTV output 

The 8-channel model has 8 HDMI / CVBS -baseband video inputs that can be selected from the menu, so support any HD HDMI source or any analog CVBS source like Analog Video cameras.

This Input can be also used as Input for Closed captioning generated from video devices like DVD players or Cable STB's on CVBS output CC 21

 

  H- THUNDER -XX

H-HDMI-QAM-IPLL  OR

H-4ADHD-QAM-IPLL
Number of Inputs 1,4,8    1,2,4
Number of CATV frequencies (carriers) 1,4,8 - Each video has its own channel 4
Modulation QAM, ATSC, DVB-T, ISDB-T in the same unit -pre-loaded & switchable                        QAM, ATSC, DVB-T, ISDB-T Firmware dependent
Can modulate multiple programs on the same frequency - carrier           

No,

each program needs to be modulated on a separate frequency 

Yes,

multiple programs can be modulated on the same frequency, for example 2.1, 2.2, 2.3, 2.4 
Encoding method MPEG2 only MPEG2 or H.264 - selectable
Dolby Audio Encoding Yes Yes
NMS YES YES
Front Panel Control YES YES
IPTV Output NO YES

 

 

Features

Thor H-Thunder-12: 12-Channel HDMI to RF QAM/ATSC Modulator for Coax Distribution

H-Thunder-12 is part of the acclaimed Thunder series of modulators, designed for professional-grade video distribution in environments like hotels, sports bars, educational facilities, and broadcast setups. This rack-mountable unit features 12 HDMI inputs, supporting resolutions up to 1080p30 (with inputs handling 480i to 1080p60) and bit rates of 6-15 Mbps (default 9 Mbps) using MPEG-2 video encoding. Audio options include MPEG-1 Layer 2, AAC, or AC3 with sampling rates of 44.1 kHz or 48 kHz.

Unlike other Thunder models that may output individual frequencies per channel, the H-Thunder-12 optimizes bandwidth by generating only 4 RF output frequencies (50-950 MHz range, 1 kHz step, 100 dBµV level with 30 dB attenuation), multiplexing 3 transport streams (TS) per frequency for a total of 12 programs. It supports ATSC (8VSB constellation) and QAM J.83B (64QAM/256QAM) standards, with a typical MER of 35 dB for clean signal quality.

Front-panel controls include an LCD display, buttons for navigation, and status LEDs (dual-color for HDMI sources: green for connected, blue for no source; green for RF active; blue for LAN connected). Rear connections feature 12 HDMI inputs, RF output, LAN port for NMS, and AC power (100-240V 50/60Hz).

Configuration is user-friendly via Ethernet-based NMS (default IP: 192.168.0.188, admin/admin), with a dashboard showing channel/program status, bitrates, and resolutions. Broadcast settings offer per-channel tweaks or a wizard for quick setup: select standard (ATSC/QAM), frequency, and apply— the system auto-arranges channels and muxes programs. Additional features include password change, IP modification, firmware upgrades via Ethernet, factory reset, and reboot.

Weighing 2800g and sized at 484x300x44mm, it's built for reliable 24/7 operation. This model stands out in the Thunder family for its efficient multiplexing, reducing RF channels while maintaining high-quality output, perfect for cost-effective multi-channel distribution over existing coax infrastructure.

Application Examples
Hybrid RF CATV Electrical and Optical Distribution Application Drawing
Video
Economical 4 HDMI Digital Modulator RF CATV over Coax QAM ATSC DVB T ISDBT Included Thor B
This video shows some of the detailed functionality of the new Thor 4 channel digital modulator in full HD. The Thor Thunder-4 modulator is the easiest way to distribute HD content to an unlimited amount of TV's or monitors using an existing coaxial RF network. This modulator is unique because it can produce 4 separate CATV channels in any RF modulation format simultaneously, those channels can be set individually and do not have to be adjacent, so you can set it up on channels 10/21/32/45 without any issue. It supports ATSC, QAM Annex B and A, DVB-T, and ISDB-T. One modulator can distribute Video to unlimited TV's using RF amplifiers, taps, splitters etc so long as your RF network supports it. The Thunder-4 is HDCP compliant and supports, VCT -Virtual channel numbers and names. Supports SD and HD video resolutions : 480i,720p,1080iand 1080p/60hz input resolution. By far the best value for a 4 channel modulator with accessible built-in options, warranty, and Thor Support to help make sure your project or application installation goes perfectly the first time. Link to detailed specifications : https://thorbroadcast.com/product/1-4-8-hdmi-digital-rf-encoder-modulator-full-hd-up-8230.html/238
8 HDMI Sources To 1 Cable | Thor Broadcast Thunder 8 RF Encoder Modulator
1, 4, or 8 HDMI Digital RF Encoder Modulator - Full HD up to 1080P Thor 8 HDMI Digital RF Modulator CC is an all-in-one device integrating MPEG2 encoding and modulating to convert audio video signals into DVB-C T ATSC ISDB-T RF out. https://thorbroadcast.com/products/hdmi 0:00 Unboxing Intro 1:25 Front pannel IP adress set up 2:46 Video Sources 3:37 Splitter 4:02 Hdmi Ports and Video Sources 4:32 Thor Brodcast Website 5:19 How to access the web interface with a browser 6:04 Encoder & Modulator settings 8:07 Status 9:00 Encode 10:16 Network Settings 10:34 Password 10:50 Update firmware 11:22 The Encoder will auto detect your source resolution (720p 1080P etc) 12:01 How to change the name of a Channel 12:21 Tuning the ATSC channels with a HD Home Run Tuner If these Videos help you please consider supporting my work https://www.paypal.com/donate/?cmd=_s-xclick&hosted_button_id=4CRW8P29AA6PY https://www.patreon.com/RobbieStrike Learn about Satellite and other things by sitting back and binging on these playlists https://www.youtube.com/user/ottawaoctane/playlists https://www.youtube.com/user/ottawaoctane/videos https://www.facebook.com/RobbieStrikeVideos/ https://twitter.com/robbiestrike3 (c) Robbie Strike 2023 http://www.RobbieStrike.com www.FreeSatelliteTV.net my links https://flow.page/robbiestrike Thor Broadcast has sent me this product to review free of charge. But for most people they would be happy for home use the once channel unit like this the thor Petite https://www.youtube.com/watch?v=C17OgxnjLeo&pp=ygUTcm9iYmllIHN0cmlrZSB0aG9yIA%3D%3D There is a one channel device that does this. $495 https://ebay.us/U9Xcw9
Quick configuration Guide for H-THUNDER-4 - 4 HDMI Digital RF Encoder Modulator- Full HD up to 1080P
Thor 4 HDMI Digital RF Modulator is an all-in-one device integrating MPEG2 encoding and modulating to convert audio video signals into DVB-C T ATSC ISDB-T RF out. H- THUNDER-4 Supports 4 HDMI inputs and its modular design (maximum 4 HDMI inputs) and flexible configuration makes it scalable and very reliable while providing high performance. The signal source could be from any STB, satellite receiver, closed-circuit television cameras, and antenna, etc. Its output signal is designed to work with any TV or STB. Because it comes standard with every RF modulation standard builtin, this device can work anywhere in the world in a plug and play format. This unit is similar to our popular line H-1,2,4 HDMI-QAM-IPLL product line, but it has some differences. It is a less expensive unit, each program is modulated on its own frequency, CATV RF output only, no IPTV output Features - 4 HDMI channels Inputs (model dependent) - HDCP compliant works with any HDMI source like DVD Player or Cable, Satellite STB up to 1080p/60 resolution - MPEG2 Video Encoding - 1080p/60, 1080i, 720p, 576i, 480i Video Resolution - Low Latency (50~100ms) - MPEG layer 2, AAC, and DD AC3 Audio Encoding - LCN - DVB-C DIGITAL QAM, ATSC, DVB-T, ISDB-T RF in one device, Modulation dynamic switching - Control Via Web-Based NMS, and easy updates Via Web - LCD Display and front panel control
Quick configuration Guide for H-THUNDER-8 - 8 HDMI Digital RF Encoder Modulator- Full HD up to 1080P
Thor 8 HDMI Digital RF Modulator CC is an all-in-one device integrating MPEG2 encoding and modulating to convert audio video signals into DVB-C T ATSC ISDB-T RF out. H- THUNDER- Supports up to 8 HDMI inputs and its modular design (maximum 8 HDMI inputs) and flexible configuration makes it scalable and very reliable while providing high performance. The signal source could be from any STB, satellite receiver, closed-circuit television camera, and antenna, etc. Its output signal is designed to work with any TV or STB. Because it comes standard with every RF modulation standard built in, this device can work anywhere in the world in a plug-and-play format. This unit is similar to our popular line H-1,2,4 HDMI-QAM-IPLL product line, but it has some differences.It is a less expensive unit, each program is modulated on its own frequency, CATV RF output only, with no IPTV output The 8-channel model has 8 HDMI / CVBS -baseband video inputs that can be selected from the menu, so support any HD HDMI source or any analog CVBS source like Analog Video cameras. This Input can be also used as Input for Closed captioning generated from video devices like DVD players or Cable STB's on CVBS output CC 21 Features - 1-8 HDMI channels Inputs (model dependent) - 8 Ch CVBS input (H-Thunder-8 only) - HDCP compliant works with any HDMI source like DVD Player or Cable, Satellite STB up to 1080p/60 resolution - MPEG2 Video Encoding - 1080p/60, 1080i, 720p, 576i, 480i Video Resolution - Low Latency (50~100ms) - MPEG layer 2, AAC, and DD AC3 Audio Encoding - CC (Closed Caption), EIA 608 - LCN - DVB-C DIGITAL QAM, ATSC, DVB-T, ISDB-T RF in one device, Modulation dynamic switching - Control Via Web-Based NMS, and easy updates Via Web - LCD Display and front panel control
Model Selection

Unboxing New 4 Channel modulator H-THUNDER-4

Specification
Technical Specifications
Encoding Section - Video
Encoding MPEG2
Interface HDMI x 12
Resolution 480i, 576i, 720@50p, 720@60p, 1080@50i/p, 1080@60i/p
Bit Rate 6-15 Mbps (Default: 9 Mbps)
Input 480i, 576i, 720p, 1080i (Max. 1080p30 Output)
Encoding Section - Audio
Encoding MPEG-1 Layer2, AAC, AC3
Sample Rate 44.1 kHz, 48 kHz
Modulator Section
MER Minimum - 35 dB
RF Range 50~950 MHz, 1 kHz step
RF Output Level 100 dBµV (30 dB Attenuation)
RF Out Output 4 frequency points
Standard ATSC Constellation: 8VSB
QAM J.83B Constellation: 64QAM, 256QAM
System
Management LCD + Control buttons / Ethernet
Language English
Upgrade Ethernet
General
Power Supply AC 100-240V 50/60 Hz
Dimensions 484 × 300 × 44 mm
Weight 2800 g
Question and Answers
Contact us
Thor Broadcast Sales
Sales@ThorFiber.com
1(800)521-THOR (8467) Ext 1
1(800)521-6384
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1(800)521-THOR (8467) Ext 2
Support@ThorBroadcast.com
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