4 HDMI & Component HD to COAX, HD 480i / 720p /1080i / 1080p Modulator and IPTV Encoder Streamer

Low Latency, HDCP Compliant HDMI, MPEG2 and H.264 Video Encoding, Dolby AC3 Audio Encoding 

QAM,  ATSC, DVB-T,  ISDB-T Modualtion

PN: H-4ADHD-QAM-IPLL  - $3495 


4 Ch HD Analog or Digital HDMI with HDCP to HDTV modulator and IPTV Encoder Streamer


Broadcast over existing Coaxial Cabling to an unlimited number of Televisions with FULL HD
Broadcast Live HDMI & YPbPr Video as Cable TV & IPTV Channels.
Licensed HDMI inputs - works with any source like DVD, Blu-Ray, or any STB




  |  800-521-8467 EXT 1  |  sales@thorfiber.com




H-4ADHD Four Channel Analog & Digital HD Channel Modulator       



           HDMI-OVERCOAX-ATSC-DVB-T-QAM-pdf                                    HDMI-OVERCOAX-ATSC-DVB-T-QAM-pdf                                        HDMI-OVERCOAX-ATSC-DVB-T-QAM-pdf

Data Sheet: H-4ADHD            User’s Manual: H-4ADHD               CATV QAM Channel

                                                                                                     Center Frequency        


Product Description

The H-4ADHD-XXX-IPLL modulator family from Thor broadcast is designed to handle even more applications than any other 4 channel chassis system that has come before.  This system has all the previous award winning features found in Thor Broadcast modulators, as well as several new additional functions for added applications and flexibility.  The platform provides 5 full RF carrier outputs for generating channels from content ingested through the ASI input.  Encoding in either MPEG-2 or H.264 is provided for 4 crystal clear video streams up to 1080p60 each. 

Bitrate is fully adjustable from 1.5 - 19 Mbps, and a variety of audio codecs are available.  Standard audio encoding in MPEG-2 AAC and MPEG-4 AAC are provided, as well as a licensed Dolby AC/3 audio codec.  Audio sources can be selected from either embedded HDMI, Analog RCA, or Digital Optical TosLink ports.  For Surround sound, digital audio inputs can be set to "pass through" mode to preserve 5.1 and 7.1 audio that is encoded already in Dolby compatible format.  Two mirrored ASI outputs are provided for broadcasters for added flexibly in distributing the content generated by the 4 encoders. 

Programs input via ASI can also be multiplexed and remapped to the ASI output, adding yet another function to the unit as an ASI multiplexer.  IPTV is not neglected in any way.  All four encoded programs can be mapped to unique IP address outputs and ports in either UDP or RTP format.  The IP output can be configured to strip null packets to reduce network bandwidth, or preserve the constant bit rat (CBR) packet stuffing normally preferred by television systems.  All four channels can be independently configured for either multicast or unicast outputs.  Closed captioning is supported on a dedicated analog 608 CC port with RCA connector, an industry standard for line 21 captioning systems.  Any 720 or 1080 line standard video signal in either HDMI or Component YPbPr format can be used for each of the four channels.  Just like all other professional Thor modulator chassis, this system can be configured with firmware for either QAM, DVB-C, DVB-T, or ATSC channel format output. 

 Contact Us or request demo Contact us or request demo


Additional Model Selection :

We can program our modulators to any avialable RF modulation format : QAM DVB-C, ATSC, DVB-T, ISDB-T

Changes in format  do not affect IPTV or ASI Outout
H-4ADHD-QAM-IP-LL QAM "Cable" DVB-C RF output
H-4ADHD-ATSC-IP-LL  ATSC " Off Air " RF output


ISDB-T RF output


Product Specifications


*All Specifiactions Subject to Change Without Notice

1.pdfhow to set vitual channel number

2.pdfset IP TV output on the encoder modulator vith VLC


4 HDMI & 4 YPbPr up to 1080P60 , 4 CVBS up to 480I

Supported Resolutions

1280x720P 60 / 59.94 / 50 Hz 1920x1080I 60 / 59.94 / 50 Hz H.264 Codec ONLY 1920x1080P 60 / 59.94 / 50 Hz


Video Codecs

MPEG-2 HD : 1.5-19.5 Mbps H.264 HD : 0.8-19.5 Mbps

Audio Codecs

  MPEG-1 Layer II Encoding
  MPEG-2 AAC Encoding
  MPEG-4 AAC Encoding

  AC3 Dolby Encoding


Support DD AC3 (2.0/5.1/7.1) passthrough for HDMI interface only

Audio Sample Rate

48 kHz

Audio Bit Rates

64 kbps, 96 kbps, 128 kbps, 192 kbps, 256 kbps, 320 kbps

Modulation Standard

QAM - J.83A, J.83B, J.83C. Firmware for ATSC or DVB-T ISDBT available

RF Frequency Range

30-960 MHz 1 KHz Step

RF Power Level

5 - 35 dBmV Adjustable

DVB-ASI Output

BNC Connector: 1-60 Mbps


BNC Connector: 1-120 Mbps Programs Selected by PID Programs Muxed to all Outputs

IPTV Output

MPEG-TS MPTS over UDP, RTP/RTSP Unicast and Multicast Supported

Cables Included

Closed Captioning

1 to 4 HDMI Cables & Power Cord

CC 608 via Analog Input

Power Input

100-240 VAC Auto Switching
~ 20 W


19x17x2 19"Rack mountable 1U high


9 Pounds

Operating Temperature

32-110 F





















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Contact us

Thor Broadcast Sales

Email: Sales@ThorFiber.com
Phone: 1(800)521-THOR (8467) Ext 1
FAX: 1(800)521-6384

Customer Service/ Support

Phone: 1-800 521-THOR(8467) Ext 2
Email: Support@ThorFiber.com

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