Find a match

HDTV Encoder Modulators



2Ch HDMI QAM/ATSC/DVB-C Modulator with MPEG-2/H.264 Encoding and IPTV

Tech Specs
Application Drawing

QuestTel's two Channel compact encoder modulators integrate MPEG-2/H.264 encoding chassis with high performance QAM/ATSC/DVB-C modulator platform, which makes them a perferct solution for HDMI to QAM or ATSC applications. B-QAM-HDMI-IP-2CH makes 1080p real time video distribution a very easy process, since QuestTel's hdmi qam modulators come with inegrated IPTV output, allowing you to generate both professional video over ip and video over coax cnannel lineups for cable HDTV networks. Our business grade modulators comply with all modern broadcast technologies and provide great support for different video inputs such as HDMI (SDI available), component, composite and ASI. B-QAM-HDMI-IP-2CH will be the best choise for any broadband company, because our systems are fully complient with all strict broadcasting standards such as closed captioning (608 on analog RCA) or AC3 audio. Furthermore, our HDMI QAM modulators are very easy to manage via user friendly and intuitive web console intarface, which makes complicated installation process fast and simple yet highly versatile and advanced. High density throughput hardware encoder is a key feature of our procuct, not only because it's constructed for heavy data processing but it also adds flexibility to your system, allowing you to switch between MPEG-2 and H.264, set various video resolutions from 480i to 1080p, change audio encoding and a lot more. Additional IPTV output provides support for both UDP and RTP (SPTS&MPTS) protocols, making your system more scalable. Overall, our compact encoder modulators will be a perfect fit for any AV installer, broadcaster or small businness user.

Questtel's 2Ch HDMI modulators are designed to convert HDMI signals, composite and component video feeds to RF QAM signals. These can then be distributed to an unlimited number of TV sets (via coaxial cable). High quality H264 and MPEG2 circuitry provide flawless HD video encoding. When in conjunction with QAM and ATCS processors they enhance 1B-HDMI-QAM-2CH units; providing the best solution for affordable coax video distribution. These units feature IPTV output, allowing you to stream live video over IP. 1B-HDMI-QAM-2CH is equipped with NMS GUI. This enables easy setup and remote control via any web-browser over LAN network. This solution is ideal for live video streaming and HD cable television applications.


Contact us

2Ch HDMI QAM/ATSC/DVB-C Modulator with MPEG-2/H.264 Encoding and IPTV

Request Best Price:

Get a quote
    • Universal compact 2 Channel HD encoder modulator
    • Full support for QAM/ATSC/DVB-C/DVB-T/ISDB-T standards
    • 2* QAM/ATSC/DVB-C/DVB-T/ISDB-T RF out in one device (QAM/ATSC/DVB-C/DVB-T/ISDB modulation dynamic switching)
    • Full support for MPEG-2 and H.264 video codecs
    • Comply with AC3(2.0) audio passthrough
    • IPTV output UDP or RTP (unicast & multicast)
    • Comply with EIA 608 standard closed captioning on analog input
    • ASI multiplexing feature
    • Low Latency modes and VCT/LCN support
    • Web concole interface
Tech Specs
Encoding Section
Video Encoding MPEG2; MPEG4 AVC/H.264
Interface x2 HDMI/CVBS/YPbPr(RCA)
Resolution HDMI: 1920*1080_60p, 1920*1080_50p

(For MPEG 4 AVC/H.264 only),

YPbPr: 1920*1080_60i, 1920*1080_50i,

1280*720_60p, 1280*720_50p

CVBS: 720*576_50i, 720*480_60i

Aspect Ratio 4:3; 16:9
Audio Encoding MPEG1 Layer II; MPEG2-AAC; MPEG4-AAC; DD AC3(2.0);

DD AC3 (2.0/5.1/7.1) passthrough

Interface x2 HDMI/SPDIF (x2 Stereo/x4 Mono)
Sample rate 48KHz
Bit rate 64/96/128/192/256/320kbps


B-QAM-HDMI-IP-2CH Digital Encoder Modulator  Pdf User Manual: B-QAM-HDMI-IP-2CH

CATV QAM Channel Center Frequency  CATV QAM Channel Center Frequency 

ATSC Channel Center Frequency Chart  ATSC Channel Center Frequency Chart 

B-QAM-HDMI-IP-2CH HDMI Encoder Modulator Promo  B-QAM-HDMI-IP-2CH Promo Page 

B-QAM-HDMI-IP-2CH HDMI Encoder Modulator Promo  2Ch HDMI QAM Modulator witth IP and ASI 

RF Section
MER ≥43dB
RF frequency 30~960MHz, 1KHz step
RF output level -30~ -10dbm (77~97 dbµV), 0.1db step
DVB-C Modulator Section 
Standard J.83A(DVB-C) J.83B J.83C
Constellation 16/32/64/128/ 256 QAM 64/ 256 QAM 64/ 256 QAM
Bandwidth 8M 6M 6M
RF Out 2*DVB-C adjacent carriers combined output
Symbol rate 5.000~9.000Msps adjustable
ATSC Modulator Section
Standard ATSC A/53
Constellation 8 VSB
RF Out 2*ATSC adjacent carriers combined output
Local interface LCD + control buttons
Remote management Web NMS
Stream Out 2 ASI out (BNC type, 100M);

IP (2* SPTS&1*MPTS) over UDP/RTP out (RJ45, 100M)

NMS interface RJ45, 100M
Power supply AC 100V~240V
Dimensions 333x232x44mm
Weight 2.5 kg
Operation  temperature 0~45°C


Disclaimer: Products, specifications and data are subject to change without notice, to improve reliability, function, design or otherwise.

QuestTel shall have no liability for any error or damage of any kind resulting from the use of this document.
Application Drawing 2Ch HDMI QAM/ATSC/DVB-C Modulator with MPEG-2/H.264 Encoding and IPTV's Application Drawing
Contact form