Question 1

We were reanalyzing our current installation. We currently have an analog modulation while the options proposed are digital. We are planning to change from analog to digital but we need to make sure all needed equipment for the migration will be available. We have to distribute the signal in two separate building and we wanted to use the existing cabling if possible. The second building is receiving the signal by an RG 11 cable and we have 1 Signal Amplifier is installed in each building see the attached file for more details. We have the following Question? Can the signal from that modulator H-4ADHD-QAM-IPLL work with the attached line amplifier? If no How can we send the signal to an extension building located at 200m from the main modulator? Thank you for providing us clear explanation that will lead us to fine decision!

Accepted Answer

We are happy to hear that your project is moving forward, Using our HD HDMI modulator your video clarity will increase tremendously compared to the current analog modulated video. The Digital QAM is also an analog modulated signal, it just carries digital information, so you treat it the same way as the analog NTSC/PAL modulated RF. All of your infrastructures stays the same. You can even have both Analog and Digital on the same coax, we can generate any different frequency then you currently using for your analog and using simple 2x1 combiner you can have both at the same time. It will work fine over your 200m coax cable. If needed for the additional extension we have fiber optic RF to Fiber / Fiber to coax extender https://thorbroadcast.com/product/thor-optical-mini-catv-rf-transmitter-45-1000mhz.html

Question 2

What is CC input means?

Accepted Answer

CC input means Closed captioning, the unit reads CC from Line 21 from CVBS baseband video input and encodes it into the stream. So for example, if you have DVD player with the HDMI and CVBS baseband video output, you can connect it to our unit bot of them and modulator will encode HD video from HDMI source and closed captioning form CVBS, the reason behind it is that HDMI doesn't carry CC as a separate signal data stream It is not necessary to use it is just an additional function, because of some costumes requires for the TV's where need to be muted.

Question 3

One requirement of the system is to have minimum latency on the channels as these are used interactively on pan-tilt-zoom (PTZ) cameras, control of the DVRs and control of the satellite receiver channels. A long latency will cause the operator to "overshoot" the point they want when controlling the PTZ and similar problems with the entertainment DVRs and satellite receivers. We totally recognize there will be more delay with the digital system over the analog one but need to minimize the latency as much as possible. Iset Mode 1 but have been playing with the manual setting and hopefully found a setting that is acceptable. The manual is not too descriptive (page 34 of the PDF file) of the DTS Delay values and GOP values in the modes and normal. So I am not guessing on the values and have a starting point, if you could fill in the below table ASAP it would help in my installation this weekend, Thor Broadcast H-4ADHD ATSC Encoding Delay Settings Input Resolution Encoding Type Low Delay Mode DTS Delay Setting GOP Bframe Setting GOP P frame Setting Average Delay (ms) HDMI 1080i MPEG-2 Mode 1, HDMI 1080i MPEG-2 Mode 2, HDMI 1080i MPEG-2 Normal, HDMI 1080i H.264 Mode 1, HDMI 1080i H.264 Mode 2, HDMI 1080i H.264 Normal ,

Accepted Answer

I suggest setting mode2 @ 1080i to test. This is a better-balanced configuration. The main parameter affect encoding delay is the DTS setting. The minimum DTS value is 50, it could be set lower but it requires higher STB/TV decoding capacity. In mode2, the DTS value is about 150. Other parameters like GOP, B frames have an insignificant effect on the delay

Question 4

We are in the process of migrating from analog RF cable tv to digital solution. The system is used for monitoring conductor etc, and the latency is a big issue. We are currently modulating 12 channels to ca 350 screens in wardrobes etc and the system is also used for the stage because the analog coax solution is close to zero latency. That is also the reason why it has been kept alive for so long. However, it’s not easy to find TVs with no/low latency anymore – even for analog RF. We are looking at SDI/SVSI/SDVoE for the stage area, but we won't look at DVB-C/T for the wardrobes where the latency is a little less critical. I see on your website that your modulators have a low latency option with 70 – 110ms and that is probably low enough for the wardrobes. Your modulators are only specified with DVB-T – will that work on physical coax? If not; do you have a DVB-C option/version?

Accepted Answer

All units you see on our website are available in all RF modulation standards; some units like the Thunder-4 and the Hybrid-8 have all standards built-in, so it's just a setting in the GUI, you can switch to DVB-C or DVB-T in just a few clicks. https://thorbroadcast.com/product/8-channel-hdmi-and-sdi-clear-catv-rf-modulator-qam-8230.html https://thorbroadcast.com/product/1-4-8-hdmi-digital-rf-encoder-modulator-full-hd-up-8230.html/238 Other units like the 4ADHD need to be ordered with specific modulation standard, they must be loaded with firmware to ensure proper standards are operational. Please let me know which model you were interested in and I will let you know if that model has expandable options or needs to be set up in advance with the proper firmware.

Question 5

I guess the H-4ADHD-QAM-IP-LL (low latency?) would be the best choice for us then - giving us flexibility in the transition period. How many can be daisy-chained? And do you have units for analog RF? Or should we insert the H-4ADHD-QAM-IP-LL after the old analog system? Also; we have a text system for translation in all the seats in the venue and this system has a mirrored output on normal HDMI - can this be converted to Closed Caption? Alternatively, I will ask the vendor Marconi if the RS233 feed can be converted to the CC standard...

Accepted Answer

You can daisy chain as many units as you like, each unit would generate different channels, for example the first would generate ch 2,3,4,5 the second 6,7,8,9, We have 135 channels available, so in theory, we can combine 33 modulators, modulating on the different frequencies ( different channels). QAM channels are actually very similar to analog channels, they also occupy 6mhz band, so you can just replace analog or combine them together, so on the same coax you can have analog and digital modulating channels, when there are modulated on different frequencies, the frequencies for digital QAM and analog NTSC /PAL are the same Those ADHD models will output CC as well, it needs to be input via baseband video in the back of the unit alongside the HDMI input; the unit will encode the CC information onto the HDMI video and will output it on the RF channel. The CC inputs read recognize and read the Closed Captioning Line 21, so it would need to be provided in this format into the unit, and encode it as a CC608. this way the CC can be turned on /off on the TV level. You could also inject ( glue) the CC into actual video than it will be encoded the same time as a Video, but then it will be permanently displayed on Tv's all the time. In other words our unit needs to receive CC in form of the analog CVBS Video Line 21 in order to be encoded to CC 608

Question 6

We have a couple of your HDMI HD QAM boxes that are loaded dual HDMI and dual SDI. we have used them in the United States for many years but last year I took them to China and couldn't get them to work with their TV's. This year our show is in Stockholm Sweden and I thought I would reach out to see if there is compatibility or if I would need different boxes. The download of the manual isn't working FYI. I get pages with squares on it. The in-house guy at the venue says "We use 8MHz channel bandwidth, modulation 256QAM max. 40Mbit/sec. /8MHz." What I can't tell is if the boxes I have to do that exactly. any help would be great. thank you

Accepted Answer

So essentially they have different standards than us. In America we use QAM 256 Annex B; in Europe, they use QAM 256 Annex A; In China, they use an RF standard called DTMB; other parts of the world use DVB-T or ISDB-T; So Television sets have built-in Tuners that can see the RF standard that is generally used in that country; so you can't just take a modulator from one country that uses a different standard and expect it to work. In the states we commonly use QAM and ATSC for over the air; both of which are 6Mhz bandwidth; DVBT I know is 8Mhz step; so again they are not interchangeable. We have 8ch HDMI SDI Digital modulator with all world RF modulation standards, this is the link to H-HYBRYD-RF-8 https://thorbroadcast.com/product/8-channel-hdmi-and-sdi-clear-catv-rf-modulator-qam-8230.html

Question 7

I have 2 types of TVs(LG's and Samsung) that I am trying to feed 1080P60 over QAM. However, when selecting H264 setting under the Input Video Format I found that Samsung TV's do not see the video signal from our encoder when H264 is selected. I am struggling to find a setting that works with both TV's. Do you have preset information for each brand of TV's capabilities? Also under the Auto-Config button, there is a list of video resolutions that can be chosen from but there is not 1080P resolution that can be chosen. Will this be available in a future update?

Accepted Answer

Every TV manufacturer has different settings and options. We suggest being consistent when purchasing televisions. We use MPEG2 in America as our primary encoding protocol, so the vast majority of TV's will only be able to see MPEG2; there are a few brands that do have H264 available, however that is very, very rare. So if you are using this type of encoder in an office, or bar, chances are that you will have to use MPEG2 and NOT H264, because all tv's can see MPEG2. I suggest you use that protocol or purchase tv's that can see H264. Most of our Modulators, including H-4ADHD-QAM-IPLL, can encoder video as MPEG2 and H.264, please log in to the unit, in Input in encoding section, please select MPEG2

Question 8

I intend to use this modulator for MDU Video insertion purposes.Will your this modulator work with the Comcast Set To Box, QAM channel 134 and display channel 1851,1852,1853,1854,1855,1855,1856,1857,18581859, 1860 or 1901. How to set it up. Can I MUX ( multiplex)  4 of those videos on the single RF frequency Channel carrier and have them as a sub-channels

Accepted Answer

Our 4 ch H-4ADHD-QAM-IPLL worked on the Comcast system as an inserted channel.
We have simple GUI instructions on how to set it up, we can percent it everything before the shipping, so it would be just plugged and play.
We have also other similar modulators for 1,2,8 and 12channels.
We have great flexible products and technical support
Please check those units for your reference
2 HDMI Modulator
https://thorbroadcast.com/product/2-hdmi-ypbpr-hd-digital-tv-modulator-qam-atsc-dvb-t-8230.html
8 HDMI/SDI modulator
https://thorbroadcast.com/product/8-channel-hdmi-and-sdi-clear-catv-rf-modulator-qam-8230.html
12 HDMI modulator
https://thorbroadcast.com/product/catv-rf-modulator-hdmi-multiplexer.html/37

Question 9

I'm working on improving my bases TV system. I'd like to be able to take a few laptops and display some PowerPoint slides. I'm looking at the H-4HDMI-QAM IPLL but don't know which one to go with. The ATSC, or QAM, or DVBt version. Can someone help me choose the correct one? We use a lot of the Blonder Tongue AMCM-860D's for our other channels. We are located within Phoenix, AZ. - It comes up as cable.

Accepted Answer

That is an excellent choice, and for the RF output option you'd most likely go with QAM.  DVBT is a foreign standard, since you mention you're in AZ, that won't work for you.  ATSC is standard 8VSB Off Air Antenna; so modulators can be used in this standard if you have an antenna RF infrastructure and then would like to add some custom cable channels of your own. So QAM is your bet; my assumption is that is what your Blonder Tongue units are. Oddly enough I researched that model and it is actually NTSC; which is the old analog variety of RF. So I'm not sure if you can purchase those in QAM or ATSC or they are only NTSC. The easy answer to find out is if you go to a TV on premise and do a channel scan to find channels on the coax plugged in the back, do you do Cable Scan or Off air Scan? - Okay so then they are QAM units. So the H-4ADHD-QAM-IPLL is the unit you'd want to select.

Question 10

We are looking to upgrade our current Radiant Communication MDU Encoder QRF-5000-1-m. We would like to upgrade to have an HDMI input instead of composite. WE use this over Comcast cable to our community. I would to see if you have an upgrade available for us to work with our service

Accepted Answer

Yes, we have the perfect solution HD Video insertion solution for the Cable TV MDU application Our encoders have various inputs needed to channel insertion. Please let me know if your service requires Comcast cable STB's or they are using CLEAR QAM ( the coax cable is connected directly to the TV)   H-1HDMI-QAM-IPLL - 1ch HDMI Encoder - IP/ASI + RF QAM output - price https://thorbroadcast.com/product/1-4-hdmi-to-qam-modulators-and-iptv-streaming-encoders-8230.html/12   H-2HDMI-QAM-IPLL - 2ch HDMI Encoder - IP/ASI + RF QAM output https://thorbroadcast.com/product/1-4-hdmi-to-qam-modulators-and-iptv-streaming-encoders-8230.html/13   4 channel : H-4ADHD-QAM-IPLL  - 4ch HDMI Encoder - IP/ASI + RF output     Please let me know if you have any questions, or you can give me a call at 800-521-8467 Ext 2

Question 11

How you can use IP TV UDP output from the H-4ADHD-QAM-IPLL CATV RF modulator / IP encoder?

Accepted Answer

An IP TV UDP output from an IP encoder can be used in several ways. Some common examples include:

Distributing the IP TV signal over a local area network (LAN) to multiple devices or TVs that are connected to the network.
Streaming the IP TV signal over the internet to remote devices or TVs using a streaming service such as YouTube or Twitch.
Connecting the IP TV signal to a digital signage system to display the content on multiple screens or TVs in a commercial or public setting.
Transmitting the IP TV signal over the air using a digital TV antenna to reach TVs in a specific geographic area.

Overall, the specific use for the IP TV UDP output from an IP encoder will depend on the user's specific needs and requirements.

Question 12

I am not sufficiently versed in IPTV so would appreciate your recommendation. At a new facility we'll feed out local live production along with incoming signals from 12-14 other tracks.  The origin of the latter is Dish Network receivers with HDMI out.  Of course, we can convert our HD SDI output to HDMI.   The live local needs to be the lowest possible latency, for obvious reasons.  It's less important that the income tracks be low latency because there's no live action to compare to.   Do you have a product that will accommodate both? or do I need a separate encoder for the live?   If we get into this, I'll need to please ask you to educate me on multicast!   Many thanks for your advice and great products!

Accepted Answer

Please review the following options:

1) H-4ADHD-QAM-IPLL: 4-channel HDMI QAM modulator/IP Encoder with QAM
latency around 300ms and IP latency of approximately 800ms.

2) H-4SDI-QAM-IPLL: 4-channel SDI QAM modulator/IP Encoder with QAM
latency around 300ms and IP latency of approximately 800ms.

https://thorbroadcast.com/product/1-4-sdi-to-qam-modulators-and-iptv-streaming-encoders.html/0

3) If latency is not a concern, I suggest the H-THUNDER-8, an
8-channel QAM modulator with latency of about 500ms.

https://thorbroadcast.com/product/1-4-or-8-hdmi-digital-rf-encoder-modulator-8230.html/239

4) Here is the link for the 16 or 24-channel IP encoder with a latency of 800ms.
https://thorbroadcast.com/product/4-8-16-24-hdmi-iptv-streaming-8230.html/215
https://thorbroadcast.com/product/4-8-16-24-hdmi-iptv-streaming-8230.html/216

this is link to our IPTV STB's
https://thorbroadcast.com/product/compact-ip-decoder-set-top-box.html

Question 13

I am reaching out about your 4 HDMI to ATSC modulators and IPTV streaming encoder. I see it has RF in. I was reaching out to make sure that if there was an antenna that went into that "RF in" that it could be distributed through the IPTV system? And if so, would it take one of the 4 channels that the HDMI ports are using? Thank you for the assistance! And then would it be possible to have the rf gateway and iptv encoder go to the same ethernet switch to go out together on the same output? So both inputs go into one switch, and then one singular output?

Accepted Answer

es, that model has an RF input and an RF output.  To your point it sounds like you'd want to combine the 4 HDMI inputs from various HDMI sources and add them to the existing channels from an Antenna. You can input the RF from the Antenna into the RF input on the Modulator. You can also use an External 2x1 Comiber, it's the same thing essentially.  However you have to make sure the channels you assign the 4 HDMI inputs are not overlapping channels from the Antenna.  In order to properly assimilate the 2 RF streams together, they must be on vacant frequencies. Putting those HDMI sources on existing channels will not work.  The easiest way to do that is with an RF scanner, or just check online in your city which frequencies are vacant.    As for inputting RF antenna and expecting the model to output the antenna channels in IP is something it will not do. The only IPTV stream outputs would be from the 4 HDMI sources you are feeding the system.  So if you feed it 4 BluRay Players, then you can have 4 RTP/UDP/RTSP streams in multicast or unicast.  If you are looking to convert RF channels from an Antenna and converting them to IP channels or streams, then we have a different product for that called a Gateway.  https://thorbroadcast.com/product/16-rf-tuners-to-iptv-1.html/116 This is our most dense RF Gateway, which can take up to 16 ATSC frequencies, Major and Minor channels, and convert them to IP streams.  We also have this available in an 8 RF channel input model.    Yes, you can connect both the Gateway and the Encoder to the switch; it needs to be a smart switch with the IGMP protocol enabled. The IGMP works in a way that it keeps the streams in the switch's memory and passes the individual streams to the specific port where the stream was requested by any IP receiver or decoder.   This is more detailed explanation how the IGMP works:   IGMP (Internet Group Management Protocol) is a communication protocol used to manage the membership of Internet Protocol (IP) multicast groups. IGMP is used by IP hosts and adjacent multicast routers to establish multicast group memberships. It plays a crucial role in enabling efficient network resource usage, especially for services like multicast video streaming. Here’s a simplified explanation of how IGMP works with multicast video streams and how it helps preserve bandwidth while allowing video access to anyone on the LAN network: Multicast Video Streaming Multicast Streaming: Unlike unicast streaming, where a separate copy of the video stream is sent to each requester, multicast streaming sends only one copy of the video stream to the network, regardless of the number of requesters. This method significantly reduces bandwidth usage. Group Membership: Devices that wish to receive a specific multicast video stream will join a multicast group. The multicast group has a specific IP address that represents all devices interested in receiving the video stream associated with that group. How IGMP Works Joining a Group: When a device on the LAN wants to start receiving a multicast stream, it sends an IGMP message indicating its desire to join a specific multicast group. Multicast Router: The local router receives the IGMP join request. The router then knows that it should forward traffic for that multicast group to the network segment where the request originated. Leaving a Group: If the device no longer wishes to receive the multicast stream, it sends an IGMP leave message. If there are no more interested receivers on the LAN, the router stops forwarding the multicast stream to that network segment. Periodic Queries: Multicast routers periodically send IGMP queries to discover if there are still devices interested in the multicast group. If no devices respond with a desire to remain in the group, the router assumes there are no interested receivers and stops forwarding the stream to that segment. Preserving Bandwidth IGMP efficiently manages network resources by ensuring that multicast traffic is only sent to network segments with interested receivers. This way, the bandwidth is not wasted on sending video streams to parts of the network where no device is interested in them. Access by Anyone on the LAN Open Access: Any device on the LAN can join a multicast group to start receiving the associated video stream, making multicast video streams accessible to anyone on the network who wishes to receive them. Dynamic Membership: Devices can join or leave a multicast group at any time, allowing for flexible and dynamic access to video streams based on interest. In summary, IGMP facilitates efficient distribution of multicast video streams by managing group memberships, preserving bandwidth by directing streams only to interested receivers, and enabling open access to video content for any device on the LAN network that chooses to join a specific multicast group.

Question 14

Do you have digital modulator that can accommodate 4 HDMI input and 1 RF output. I need the 4 sources to be modulated and output on one UHF frequency.Can the 4 channels output adequately at 720? The customer is looking to use ATSC

Accepted Answer

Yes we do have a 4 Channel modulator that can do that.  Just keep in mind you will be limited by the bandwidth on the RF channel with 4 programs on it.  Model # H-4ADHD can be ordered in ATSC or QAM On QAM 256 you have 38mbps of data available. You can still be in 1080 @ 9.5mbps of data rate on each HDMI input and the quality is still excellent.  It's much more difficult on ATSC which only has about 19Mbps, so each input would be under 4.5mbps.  An ATSC (8VSB) channel can only contain a 19.2Mbps bandwidth. With four programs on one channel, we would need to encode each at about 4.5Mbps. Due to US standards, we are forced to encode in the MPEG2 standard and the 4.5Mbps is a bit low for HD 720p.  If that is acceptable for your customer, we can definitely do it using this device. In some cases, customers encode static video like newscasts at 3Mbps to create more room to allocate 7Mbps for sports channels with a lot of movement.  Yould can put 2 programs on 2 different RF channels as well.  So you can have channels 8.1 and 8.4, and then 9.2 and 9.5. This would be the best option for ATSC.

Question 15

I am looking to take about 50 channels from a fiber IPTV system that will be MPEG4 streams and convert those into 50 channels of RF QAM to feed to standard TVs in the campground and infield buildings Daytona International Speedway.  I am currently using the H-IPRF-QAM-32CH to take 8 IPTV channels and put them into the RF QAM in a frequency range that is notched out for us.  I believe that in the near future I will need to create the entire QAM myself as Spectrum is moving to Fiber and feeds from a managed switch (IPTV). The only issue that I have with the H-IPRF-QAM-32CH is that I need to transcode 4 of the feeds that we insert from MPEG4 to MPEG2.  The H-IPRF-QAM-32CH will not accept the MPEG4 feeds natively as far as I can see.  This would also mean it will not work with what Spectrum is setting up. It seems that the H-HERMES-64 would do what I need done if I am not mistaken? You did state that there is another product being developed.  Would that match the specs I have given? Let me know if you have any other questions.  I have a meeting with Spectrum in a few weeks, so I am trying to make sure I have put a plan together to keep my system running.

Accepted Answer

ust to clarify, the H-IPRF-QAM-32CH will accept the H.264 stream and pass it to the RF QAM. However, most TVs will not support this because MPEG4 (H.264) is not a US CATV RF standard; most TVs require MPEG2. If you need to transcode just 4 streams, the easiest way would be to decode those streams to HDMI format and use a 4-channel modulator. You can decode IP using the H-STB-IP, and for the 4-channel modulator, you can use the H-THUNDER-4.       H-STB-IP https://thorbroadcast.com/product/compact-ip-decoder-set-top-box.html   H-THUNDER-4 https://thorbroadcast.com/product/hdmi-modulator-qam-rf-coax-output-full-hd-8230.html/238

Question 16

How to send 4 or 8 channels HDMI video / Audio CATV RF without coax cable, I have only Cat 6 cable avaiable for each TV's is it even possible ?

Accepted Answer

the simplest solution would be to use a 4-channel or 8-channel HDMI modulator to distribute the signal over coax and RJ6. The H-Thuner-4 or 8 would be suitable as a 4-channel modulator, and the Lynx Ultra - Lynx Ultra Commercial HDTV Distribution Network on Cat 6 Cable can distribute the television signal over Cat 6 cable. I have attached the datasheets for these products for your reference.   https://thorbroadcast.com/product/hdmi-modulator-qam-rf-coax-output-full-hd-8230.html/238 https://thorbroadcast.com/product/hdmi-modulator-qam-rf-coax-output-full-hd-8230.html/239 Alternatively, you could use a 4-channel encoder like the Spartan-4 with an H-STB-IP by each TV. https://thorbroadcast.com/product/4-channel-hdmi-cvbs-network-encoder-streamer-udp-rtp-unicast-multicast-8230-2.html https://thorbroadcast.com/product/compact-ip-decoder-set-top-box.html

Question 17

I had called yesterday to see if a 4-ADHD could send, multi program
transport stream directly in to my ATSC TV modulator, which also has an
ASI input.

I have attached an instruction manual of my modulator for your review.

I will have a number of these modulators as part of my TV transmitter
packages, in my TV network, and I am exploring the most efficient ways
to bring programming to these distant transmitters.

From a practical point each transmitter is located in different
communities on different broadcast frequencies, and will each have 4 sub
channels (ex: 16.1, 16.2, 16.3. 16.4), as they will all be on virtual CH16.

Please let me know what equipment is compatible and how this may be best
achieved considering there will be one distribution point out to all the
transmitters.

Is there a single device that can send to all modulator devices
simultaneously? Each remote location has a public static IP.

Accepted Answer

Based on your description, this is a very typical broadcast distribution architecture and there is a straightforward way to achieve it. At the central distribution point, you can use our Thor Broadcast H-4ADHD-ATSC-IPLL encoder.  - https://thorbroadcast.com/product/4-hdmi-component-hd-to-coax-and-iptv-hd-8230.html/22   This unit accepts four HDMI program sources and multiplexes them into a single MPTS (Multi-Program Transport Stream) containing your four virtual channels, for example: 16.1 16.2 16.3 16.4 The encoder then sends this MPTS over IP to each transmitter location in your network. Since each of your remote transmitter sites has a public static IP address, the encoder can simply transmit the stream using UDP unicast to all of the transmitter sites simultaneously.   Remote Transmitter Sites At each transmitter location you would install our: Thor Broadcast H-IP-ASI-B-V3  -  https://thorbroadcast.com/product/asi-to-ip-and-ip-to-asi-converted-with-decoding-8230.html   This unit receives the IP MPTS stream from the network and converts it back into ASI format, which can then be fed directly into the ASI input of your ATSC modulator. The ATSC modulator then broadcasts the multiplex as RF with the four virtual channels. System Architecture Central Headend 4 Program Sources (HDMI) → H-4ADHD-ATSC-IPLL Encoder → MPTS over IP Network Distribution Internet / IP network UDP Unicast to multiple transmitter locations Remote Transmitter Site IP Stream → H-IP-ASI-B-V3 (IP → ASI Converter) → ASI Output → ATSC Modulator → RF Broadcast (Channel 16 with subchannels 16.1 – 16.4) Advantages of this Architecture • One central encoder feeds all transmitter locations • Very efficient IP distribution over the internet • Each transmitter receives the same synchronized transport stream • Fully compatible with ASI input on your ATSC modulators   Please let me know if this would work for you. For 7 sites, you would need: 7 pcs H-4ATSC-ATSC-IPLL 7 pcs H-ASI-IP-B-V3

Question 18

Thank you for the fast response and system diagram. I have some technical questions:   My modulator indicates that it accepts UDP unicast, your 4-ADHD sends UDP unicast. Can the 4-ADHD directly deliver 4 programs to my modulator, as a one to one peer  ? Does the 4-ADHD allow for both the ASI output to be active along with the Unicast output stream ? I have a unit here we can test with. I have a mix of non unicast ASI only modulators that may require your unicast to ASI decoders unless I change them all to a standard modulator.  Can you provide me with current 4-ADHD pricing, along with the Unicast decoder?

Accepted Answer

1. My modulator indicates that it accepts UDP unicast. Does your 4-ADHD send UDP unicast? Yes. The H-4ADHD can output UDP unicast streams. 2. Can the 4-ADHD directly deliver 4 programs to my modulator as a one-to-one peer connection? Yes. The unit can send either: UDP Unicast streams (one program per stream), or UDP Multicast MPTS, which contains all four transport streams in a single multiplex. This allows flexibility depending on how your modulator expects to receive the streams. 3. Does the 4-ADHD allow both the ASI output and the Unicast IP output to be active at the same time? Yes. Both ASI output and IP output can operate simultaneously. 4. I have a mix of ASI-only modulators that may require a unicast-to-ASI decoder. That is correct. For modulators that only accept ASI input, you would use our IP-to-ASI converter to convert the IP stream back to ASI. 5. Pricing Current pricing is as follows: H-4ADHD-QAM-IPLL (4-Channel Encoder / IP Output) – $3,895 H-ASI-IP-B-V3 (ASI ↔ IP Converter / Decoder) – $2,995 - https://thorbroadcast.com/product/asi-to-ip-and-ip-to-asi-converted-with-decoding-8230.html

Question 19

We discussed replacing the existing analog RF modulation system with a modern digital QAM HD distribution system using Thor Broadcast equipment. Your current system distributes TV signals over an existing coax network to approximately 144 TVs throughout the vessel. The system was originally built around older analog modulators and DIRECTV receivers, and you are now looking for a more reliable and higher-quality digital replacement.

Accepted Answer

Your current system distributes television signals through a coaxial cable network to approximately 144 TVs throughout the vessel. The system was originally installed around 2012 and uses older analog modulators connected to DIRECTV receivers. Over time, the system has developed issues such as: Analog picture degradation (ghosting and noise) Aging equipment Limited flexibility for adding new sources such as cameras or additional channels Moving to digital QAM distribution will significantly improve reliability and picture quality while allowing the system to expand easily. Recommended Core Solution We discussed using the Thor Broadcast Thunder-8 HDMI QAM Modulator, which accepts 8 HDMI inputs and converts them into 8 digital QAM channels distributed over coax. Product Link: https://thorbroadcast.com/product/8-channel-hdmi-rf-modulator-atsc-or-qam-8230.html Multiple modulators can be combined to create larger channel systems such as: 16 channels (2 units) 24 channels (3 units) 32+ channels if required Each unit operates independently and can be easily combined using standard RF combiners. Source Compatibility The Thunder-8 modulator works with any HDMI source, including: DIRECTV receivers Satellite receivers Media players Computers Digital signage players Other HDMI devices The system encodes video using MPEG-2 QAM, which provides maximum compatibility with televisions used in United States, Canada, and Mexico. Existing RF Network Compatibility Since your vessel already has a coax distribution network with amplifiers and splitters, there is a strong possibility that the new system can be installed with minimal changes. In many cases the upgrade process is simply: Remove the old analog modulators Connect the digital QAM modulators Rescan the TVs for digital channels Digital QAM typically requires less RF power than analog, so existing amplifiers usually work without modification. Older Television Compatibility Some televisions onboard may be older analog or international models. If a TV does not properly decode digital QAM, an external QAM set-top box may be used. Example Decoder: https://thorbroadcast.com/product/hdmi-qam-set-top-box-decoder-8230.html These boxes convert QAM RF channels into HDMI output, allowing older TVs to continue operating. Camera System Integration You mentioned the vessel also uses a mix of IP cameras and analog cameras that may need to appear as channels on the TV system. IP Cameras IP camera streams (H.264) can be converted to HDMI using IP decoders. Example IP Decoder: https://thorbroadcast.com/product/iptv-decoder-set-top-box-8230.html These decoders output HDMI, which can then be connected to the modulator to create a camera channel. Analog Cameras Analog cameras can also be added using modulators that support composite video input. Example Analog + HDMI Modulator: https://thorbroadcast.com/product/4-channel-hdmi-av-rf-modulator-8230.html This allows legacy cameras to remain part of the system. RF Combining and Distribution Multiple modulators can be combined together using standard RF combiners or passive splitters used in reverse. Thor Broadcast also provides RF splitters and combiners designed for CATV systems. RF Splitters / Combiners: https://thorbroadcast.com/product/1-x-2-to-1-x-128-fiber-optic-couplers.html Typical CATV RF frequency range supported: 54 MHz – 1000+ MHz, which easily accommodates digital QAM channels. Cost Advantage Compared to the Technicolor COM3000 system , the Thor Broadcast solution should cost a small fraction of that amount while providing: High-definition digital channels Flexible expansion Integration of satellite, media players, and cameras Compatibility with existing coax infrastructure

Question 20

I noticed in the 4-adhd programming there are 4 Spts channels, and 1 Mpts.    I would assume the spts allow the various channels to be delivered up to 4 different locations ?   If the same programming is all from input 1, to 4 different remote sites, is it required to present that program, 4 times to each of the 4 inputs, or is there a different programming solution?   Is selecting the Mpts a simpler way of directing all 4 inputs to one common transmitter, where the same can be achieved by manually directing each of the 4  spts to the same location ?   My modulator has a single primary and another single backup IP address for the entire reception of IP channels. I assume that this permits different input channels from various sources to be combined into a single broadcast. Is this correct?   I assume the Ips used for programming delivery must be different than control, or does it not matter because different ports are used ?   I assume your Mpts to asi product also allows inputs from various sources to be combined to a single ASI output using either a combined group of spts or a single Mpts ?   If inputs are sent in resolution  (say 480), are more than 4 programs capable of being combined (say 7) by your Mpts to asi device ?   Does my modulator function the same way ?   I guess the reason for these questions is my thinking of the 4-adhd now as a distribution appliance,  flexible to distribute programming many ways, rather than just a single device to single transmitter application as I use it now.   Once I have a clear understanding of how these devices work and their limitations, I can best figure out how many I will need to build out my network.

Accepted Answer

1. SPTS vs MPTS on the 4-ADHD You are correct that the unit supports: 4 × SPTS (Single Program Transport Streams) 1 × MPTS (Multi Program Transport Stream) SPTS = one program per IP stream MPTS = multiple programs combined into a single IP stream 2. Can SPTS be sent to different locations? Yes. Each SPTS carries only one program, but you can send each SPTS to a different destination (IP + port). So effectively: Channel 1 → Site A Channel 2 → Site B Channel 3 → Site C Channel 4 → Site D 3. Same program to multiple locations If you want to send the same program to 4 different remote sites using SPTS, then: Yes — you would need to replicate that program across multiple inputs (or use duplication upstream) This results in 4 independent SPTS streams, each pointing to a different destination.  Alternative (better approach): If your network allows, you could also use: Multicast distribution, or A network-level duplication (router/server side) This avoids duplicating inputs physically. 4. Using MPTS instead Yes — selecting MPTS is a simpler way when sending all programs to one location. MPTS combines all 4 programs into one IP stream That stream is then received and demultiplexed on the receiving side Important: Total bitrate will be ~15–20 Mbps (depending on encoding settings) Requires sufficient and stable bandwidth between locations 5. Modulator with single IP input If your modulator accepts: One primary IP One backup IP Then typically it expects one MPTS stream, not multiple SPTS streams. In this case, yes — the system works by combining multiple programs into a single transport stream (MPTS) and sending it to that IP. 6. IP addresses for control vs streaming Good question. Control IP (management GUI) → used for configuration Data/streaming IP → used for video transport   7. MPTS to ASI functionality Yes — our IP to ASI unit supports this. You can: Input multiple SPTS streams, or Input one MPTS stream And output: A single ASI output carrying a combined MPTS Limitation: Total bitrate must stay within ~19.3 Mbps (ATSC standard) 8. Number of programs in MPTS (SD vs HD) Correct. You can combine multiple programs, but total bitrate is the limiting factor. Example: Good quality program ≈ 4–5 Mbps Total available ≈ 19.3 Mbps So: ~4 programs → good quality 6–7 programs → lower quality Works better for low-motion content (news, talk shows) Resolution (SD vs HD) matters less than bitrate per program. 9. Does your modulator behave the same way?  Yes — if your modulator accepts IP input, it typically works the same: Receives MPTS Demultiplexes internally into channels 10. Using 4-ADHD as a distribution platform You are absolutely correct. The H-4ADHD can be used as a flexible distribution appliance, not just a point-to-point encoder. However, when distributing over public or routed networks, please note:  This requires proper network configuration Basic concept: Encoder (TX side) must be on the same LAN as its router Destination IP = public/WAN IP of receiving site Required ports must be open and forwarded On the receiving side: Router must port-forward incoming stream Forward to the IP of the decoder / IP-to-ASI unit Example: TX Side Encoder IP: 192.168.2.136 Router: 192.168.2.1 RX Side Public IP: 10.141.27.55 → Port forwarded to local decoder (e.g., 192.168.1.50 port 1000 Final Note Once you define: Number of sites Number of programs per site Network type (private vs public) We can help you determine: Exact number of units required Best architecture (SPTS vs MPTS vs hybrid)

Availability:	In stock	Condition:	new
Shipping:	starting at $0.00	Warranty:	2Yrs

Additional Model Selection:	We can program our modulators to any available RF modulation format: QAM DVB-C, ATSC, DVB-T, ISDB-T Changes in format do not affect IPTV or ASI Output
H-4ADHD-QAM-IPLL	QAM "Cable" DVB-C RF output
H-4ADHD-ATSC-IPLL	ATSC " Off Air " RF output
H-4ADHD-DVBT-IPLL	DVB-T RF output
H-4ADHD-ISDBT-IPLL	ISDB-T RF output

*All Specifications Subject to Change Without Notice
Input	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 1920x1080P 60 / 59.94 / 50 Hz CVBS Input Supports 480I only
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 also: 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 MUXED MPTS
DVB-ASI Input	BNC Connector: 1-120 Mbps Programs Selected by PID Programs Muxed to all Outputs
IPTV Output	MPEG-TS MPTS over UDP, RTP/RTSP Unicas, and Multicast Supported 4 separate SPTS's 1 Muxed MPTS
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
Dimensions	19x17x3 19"Rack mountable 1U high
Weight	9 Pounds
Operating Temperature	32-110 F

4 HDMI & Component HD to COAX and IPTV HD 480i/720p/1080i/1080p CC Modulator QAM

Description

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

Features

Drawings

Application Examples

Video

Model Selection

Accessories & Upgrades

Specification

Question and Answers

Multicast Video Streaming

How IGMP Works

Preserving Bandwidth

Access by Anyone on the LAN

Remote Transmitter Sites

System Architecture

Advantages of this Architecture

Recommended Core Solution

Source Compatibility

Existing RF Network Compatibility

Older Television Compatibility

Camera System Integration

IP Cameras

Analog Cameras

RF Combining and Distribution

Cost Advantage

1. SPTS vs MPTS on the 4-ADHD

2. Can SPTS be sent to different locations?

3. Same program to multiple locations

4. Using MPTS instead

5. Modulator with single IP input

6. IP addresses for control vs streaming

7. MPTS to ASI functionality

8. Number of programs in MPTS (SD vs HD)

9. Does your modulator behave the same way?

10. Using 4-ADHD as a distribution platform

Final Note

Documents