Petit HDMI RF MODULATOR

H-HDMI-RF-PETIT
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Descripción

Perfect HD up to 1080P/60  HDMI to Coax RF DIGITAL MODULATOR, Network - Ethernet Control

The most unique and cost-effective Networked Digital HDMI RF modulator. Designed to allow any HDMI source like an STB, satellite receiver, HDMI camera, DVD player, Computer, and a ROKU device.You can convert to any RF TV channel of your choice. 

This Thor Modulator is an all-in-one device integrating  HD MPEG2 encoding with AC3 Dolby Audio with an internal digital modulator. Converts HD audio/video signals from any device into DVB-C/T/ATSC/ISDB-T RF output.
The unit supports any HD source with the following video resolutions: 720p, 1080i, 1080p

Simply connect to any PC and control the unit via Thor Broadcast's proprietary GUI which has been touted as being the best on the market.

This unit is plug and play and has exceptional quality for a very low price to help anyone with any budget create their very own RF channel which can be viewed on thousands of televisions simultaneously. 

Caracteristicas
  • HDMI Input - HDCP compliant ( works with any HDMI device )
  • 10/100 Ethernet NMS port for control, setup, and monitoring
  • RF output could be set to any CATV format as QAM, ATSC, DVB-T, or ISDB-T 
  • RF output power is +24dbmv; enough for distributing HDTV video to 100's TV over existing coax cable network
  • RF power could be controlled over the network via NMS Gui (Proprietary)
  • MPEG2 video encoding
  • AC3 Audio encoding
  • Video bit rate 1-19.5Mbps can managed over the network
  • Supports any CATV RF agile channels form 57-1000Mhz, channels  2 -135,
  •  Supports output resolutions up to 1080p
  •  Easy to set up via NMS.
  •  Small size and light weight
  • Includes wall-mount type rack ears
  •  Install multiple units onto your TV system
Dibujos
Vídeo
Thor HDMI to Coax FULL HD 1080p60 Digital modulator QAM, ATSC, DVB T, ISDB T with HDMI LOOP WEBNMS
$291.89 - ALL new THOR BROADCAST Full HD 480i, 720p, 1080i, 1080p HDMI, HDCP compliant, digital, Agile COAX modulator for QAM ,over-the-air ATSC 8VSB, ISDB-T, and DVB-T. MPEG2 encoding with AC3 Audio encoding, Data rate up to 22Mbps, Perfect for educational, sports bar, private houses HD over Coax distribution currently on Sale, the best price on the market 291.89 https://thorbroadcast.com/product/petit-hdmi-rf-modulator.html
THOR - Petit HDMI RF MODULATOR - HDMI to Coax - ATSC QAM DVB-T or ISDB-T - How to set up
Perfect HD up to 1080P/60 HDMI to Coax RF DIGITAL MODULATOR, Network - Ethernet Control The most unique and cost-effective Networked Digital HDMI RF modulator. Designed to allow any HDMI source like an STB, satellite receiver, HDMI camera, DVD player, Computer, and a ROKU device.You can convert to any RF TV channel of your choice. This Thor Modulator is an all-in-one device integrating HD MPEG2 encoding with AC3 Dolby Audio with an internal digital modulator. Converts HD audio/video signals from any device into DVB-C/T/ATSC/ISDB-T RF output. The unit supports any HD source with the following video resolutions: 720p, 1080i, 1080p Simply connect to any PC and control the unit via Thor Broadcast's proprietary GUI which has been touted as being the best on the market. This unit is plug and play and has exceptional quality for a very low price to help anyone with any budget create their very own RF channel which can be viewed on thousands of televisions simultaneously. TO buy one on Ebay US $389.83 http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575494440&toolid=10001&campid=5338656612&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FPetit-HDMI-RF-MODULATOR%2F114081191928%3Fhash%3Ditem1a8fc4d7f8%3Ag%3Ay3YAAOSwkkxeKfS-  Features HDMI Input - HDCP compliant ( works with any HDMI device ) 10/100 Ethernet NMS port for control, setup, and monitoring RF output could be set to any CATV format as QAM, ATSC, DVB-T, or ISDB-T RF output power is +24dbmv; enough for distributing HDTV video to 100's TV over existing coax cable network RF power could be controlled over the network via NMS Gui (Proprietary) MPEG2 video encoding AC3 Audio encoding Video bit rate 1-19.5Mbps can managed over the network Supports any CATV RF agile channels form 57-1000Mhz, channels 2 -135, Supports output resolutions up to 1080p Easy to set up via NMS. Small size and light weight Includes wall-mount type rack ears Install multiple units onto your TV system Petit HDMI RF MODULATOR https://thorbroadcast.com/product/petit-hdmi-rf-modulator.html #CoaxtoHDMI #DigitalTVModulator #RFModulator THE HAPPY SATELLITE NERD EPISODE 89.1 In this video I talk about a great tool for your #FreeSatelliteTV setup where you can use this modulator to set up your own TV Channel though Coax and have your favourite channel on ATSC 12.1 By default the Petit HDMI RF Modulator broadcasts to Cable QAM Channel 2 but you can move the channel by selecting the up or down button! Come and join our Discord Chat server and chat Satellites https://discord.gg/eCUw7xw https://www.youtube.com/user/ottawaoctane/videos https://www.facebook.com/RobbieStrikeVideos/ https://twitter.com/robbiestrike3 (c) Robbie Strike 2020 http://www.RobbieStrike.com www.FreeSatelliteTV.net
HDMI Modulator QAM ATSC DVB-T ISDB-T NMS IP Connection and Control Instructions for H-HDMI-RF-PETIT
This video shows you how to connect Thor H-HDMI-RF-PETIT to your network. You can control, change any setting such modulated channel number, modulation format, name of your channel and set the VCT, virtual channel number, Increase or decrease RF output power. All IP controlled devices like ours have their own IP address and in order to communicate with it, the PC needs to match the device subnet. for Example our unit static default IP address is 192.168.1.10 and your PC is set to DHCP and IP address is 192.168.0.10, you would need to go and change Your computer nic address to 192.16.1.xx , the xx is between 1-254 but can not be 10, because it would be repeating IP. This is just the nature of TCP/IP Ethernet. The easiest way to verify your IP address is to type in windows CMD and type " ipconfig" , the command prompt will show you the computer network information and IP address. We agree that the IP settings might not be known to all our customers, We made a special step by step document to make it easy, we will also make a video instructional video. Once the device is set to the specific channel and modulation, most likely this is the only time you need to connect it to the device. Please note that most settings you can do on the front of the units, change the channel and modulation. this is the link to the instructions: https://thorbroadcast.com/upload/files/394/how-to-connect-hdmi-rf-petit-to-pc-via-ethernet.pdf This is a link to the product specifications : https://thorbroadcast.com/product/petit-hdmi-rf-modulator.html
BUDGET CHURCH VIDEO DISTRIBUTION | HD Video Over Coax | Thor HDMI RF Petit - REVIEW & INSTALL
Consider supporting us on Patreon ► https://patreon.com/ajaytheceo Thor HDMI RF Petit Modulator ► https://amzn.to/2ZVT9OD 1,000 Ministries Sharing God's Word ► http://bit.ly/1000churches Church Live Streaming 101 - https://modernmediaministry.com OBS Complete Bundle ► https://bit.ly/2JP4DKO Subscribe for more! - http://bit.ly/2RkM4TT In this video, I distribute HD video throughout my church over the existing coax in the walls using the Thor RF HDMI Petit Modulator. == TIMESTAMPS == 0:00 - Video Intro 0:08 - Opener 0:23 - Greeting 0:46 - Equipment Needs 1:56 - Unboxing 4:47 - Old Setup vs New Setup 6:22 - Setup at House with PS4 6:45 - Web Interface Setup 10:04 - PS4 HDMI Loop Through Test 10:58 - Previous Gear 11:54 - New Gear Location 12:16 - Antenna Location 13:26 - Gear Installed 15:14 - Configure for Church 18:12 - Sanctuary Feed Testing 19:38 - Connecting HD Antenna 20:05 - Rescanning for Channels 23:24 - Connecting to other TVs 24:07 - Other TVs Setup 24:45 - Final Thoughts 25:53 - Closing Thor HDMI RF Petit Modulator ► https://amzn.to/2ZVT9OD Maker Link ► https://thorbroadcast.com/product/petit-hdmi-rf-modulator-1.html Blog Entry ► https://ajayholmes.com/reviews/27639/ // NEED SOME HELP WITH YOUR MEDIA MINISTRY? // ○ Get The Book - Modern Media Ministry Made Easy - https://amzn.to/2yWGE6M ○ Book A Consultation - https://ajayholmes.com/consultations ○ START A CHURCH PODCAST FOR FREE - https://grow.ajayholmes.com/podcast ○ GROW YOUR CHURCH YOUTUBE CHANNEL - https://grow.ajayholmes.com/youtube-growth ○ CHURCH LIVE STREAMING CHECKLIST - https://grow.ajayholmes.com/live-streaming-checklist ○ GET ORGANIZED - Sermon Details Spreadsheet - https://grow.ajayholmes.com/sermon-details ○ COMPLETE CHURCH LIVE STREAMING 101 COURSE - https://modernmediaministry.com PERFECT AFFORDABLE WEBSITE HOSTING ► http://bit.ly/2OApEdyC FREE STOCK ► https://join.robinhood.com/arthurh504 // MY CURRENT VIDEO GEAR // ○ Camcorder - https://amzn.to/2MHWWHl ○ Video Switcher Mini - https://amzn.to/2znkZYQ ○ Wireless Microphone - https://amzn.to/3bYFysu ○ Shotgun Microphone - https://amzn.to/33u9usk ○ Mixer - https://amzn.to/2MlnRtz ○ Lights - https://amzn.to/3cZxnxp ○ Capture Card - https://amzn.to/33qu5xU ○ Drone 1 - https://amzn.to/2MGXsFv ○ Drone 2 - https://amzn.to/32iaTSB ○ Green Screen - https://amzn.to/33vSeTG // JOIN THE COMMUNITY // ► REQUEST TO JOIN TODAY: http://bit.ly/2KragSq 4-M.E. (Modern Media Ministry Made Easy) is a Facebook Group community of people in ministry just like you were we can share and grow together. Ask your questions, share answers, join private Facebook live streams to grow your media ministry. // FOLLOW ME ON SOCIAL // Website ► https://ajayholmes.com Twitch ► https://twitch.com/ajaytheceo Facebook ► https://www.facebook.com/ajaytheceo/ Twitter ► https://twitter.com/ajaytheceo Instagram ► https://www.instagram.com/ajaytheceo/ // LIKE WHAT YOU ARE SEEING HERE? WOULD YOU LIKE TO HELP? // Consider supporting us on Patreon ► https://patreon.com/ajaytheceo Thank you in advance. // MUSIC USED IN VIDEO // provided by Epidemic Sound https://www.epidemicsound.com/referral/49ape6/ // DISCLAIMERS // I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to www.amazon.com. #hdmiovercoax #hdmimodualtor #churchvideodistribution
HDMI Modulator and RF over fiber latency demonstration Thor Petit connected to Fiber optic TX and RX
This is a demonstration for showing you how to do HD video Encoding using QAM modulation and transporting it over 10Km of fiber This Specific setup is for applications where HDMI source " ROKU " device is connected to the HDMI RF modulator H-HDMI-RF-PETIT, the CATV RF channel number 2 created by the modulator then output through Coax is then connected to the CATV RF Fiber optic Transmitter, over single-mode fiber optic cable and over to the CATV RF optical receiver, the receiver converts the optical signal to electrical COAX RF signal again. The encoder modulators add a slight delay to the system, the fiber optic Tx and RX ads only 1ms delay.
Selección de modelo

NMS Video instruction describes how to connect and control the H-HDMI-RF-PETIT via your PC over IP Ethernet Network

This is a link to detailed PDF instructions: H-HDMI-RF-PETIT NMS Connection Instructions

Especificación

                     Encoding Section-Video

Encoding

MPEG2

Interface

HDMI*1

Resolution

Input

Output

[email protected]

Max. [email protected]

[email protected]

[email protected]

Bit rate

2.000-24.000 Kbps

                     Encoding Section-Audio

Encoding

MPEG-1 Layer2, MPEG-2 AAC, AC3

Sample rate

48KHz

Bit rate

MPEG1 Layer 2 (128Kbps)

MPEG-2 AAC (VBR)

AC3 (128kbps)

System

Management

Ethernet

Language

English

Upgrade

USB/Ethernet

                      Menu Configuration

Basic

RF range/Key ID/ Service Name/ RF attenuation

Advanced

Service provider/Network ID/ ONID/ TS ID/ Service

 

ID/PMT PID/VPID/APID/PCR PID/Network

                       Modulator Section

MER

Typ. 35dB

RF range

50-950MHz, 1KHz step

RF output level

100 dB ( 70-100 adj )

Standard

ISDB-T

Bandwidth

6M

Constellation

QPSK, 16QAM, 64QAM

Code rate

1/2, 2/3, 3/4, 5/6, 7/8

Guard interval

1/4, 1/8, 1/16, 1/32

FFT

2K, 8K

Standard

DVB-T

Bandwidth

6M, 7M, 8M

Constellation

QPSK, 16QAM, 64QAM

Code rate

1/2, 2/3, 3/4, 5/6, 7/8

Guard interval

1/4, 1/8, 1/16, 1/32

FFT

2K, 8K

Standard

DVB-C J.83A

Constellation

64QAM, 128QAM. 256QAM

Symbol rate

5.000-9.000Msps adj

Standard

DTMB

Bandwidth

8M

Constellation

GB20600-2006

Standard

ATSC

Bandwidth

6M

Constellation

8VSB

Standard

QAM J.83B

Bandwidth

6M

Constellation

64QAM, 256QAM

                                     General

Power supply

12V1A

Dimensions

103*64*24mm

Weight

300g

Question and Answers
Answer:
So our Petit units sound like they would be a better fit for you. However when you say you can put these on adjacent channels, are all your modulators set to be next to each other, or is this the effect of having ATSC and you're not using a channel filter? You can set the PETIT units to any channel you want, so long as there is nothing else on that frequency, so you can put 5 of them on channels 20-24 with no issue. The second option would be using this 4 channel HDMI modulator H-THUNDER-4, also has the ability to generate any frequency ( CATV QAM or ATSC Channels ) independently, So it doesn't have to adjacent, it can be spread out all over the spectrum. https://thorbroadcast.com/product/1-4-8-hdmi-digital-rf-encoder-modulator-full-hd-up-to-8230.html/238 The 8 channel HDMI H-HDCAX-8 has the ability to have separate coax channels per HDMI input https://thorbroadcast.com/product/1-8-hdmi-digital-rf-modulator-cc-closed-captioning.html/95
Answer:
So our Petit units sound like they would be a better fit for you. However when you say you can put these on adjacent channels, are all your modulators set to be next to each other, or is this the effect of having ATSC and you're not using a channel filter? You can set the PETIT units to any channel you want, so long as there is nothing else on that frequency, so you can put 5 of them on channels 20-24 with no issue. Also, this 4 channel HDMI modulator, also has the ability to generate any frequency ( CATV QAM or ATSC Channels ) independently, So it doesn't have to adjacent, it can be spread out all over the spectrum. this is the link : https://thorbroadcast.com/product/1-4-8-hdmi-digital-rf-encoder-modulator-full-hd-up-to-8230.html/238
Answer:
Currently, all of our models are generally uncompressed SDI or HDMI input. NDI is already encoded IP stream, each stream would need to be decoded to HDMI or SDI in order to connect to the encoder. Are you planning to use IP STB's for each TV? The other option would be using Modulators and deliver the video as a modulated DVB-T channels, the latency would be much better than Video over IP Please check this product: https://thorbroadcast.com/product/8-channel-hdmi-and-sdi-clear-catv-rf-modulator-qam-8230.html
Answer:
US ATSC standard Audio format is AC3, All the TV's sold in US support AC3 Dolby Audio, many TV's supports also MPEG2
Answer:
The front panel was made for quick adjustments on the fly like changing the channel. Very simple options on this unit. The process for changing encoding from cable to ATSC from the front panel of the H-HDMI-RF-Petit First: Use the up arrow to select the channel you want (i.e. C015 for channel 15)Second: Once you selected the desired channel, press the menu button (the middle button in between the up and down arrows. Looks like a box with three lines)               The menu button brings you to three options J83b, dhOF (or dhON) and ASRThird: select the option of J836. Once there use the up arrow to go to ATSC (look more like ARSC from the front panel) [easy way to tell ATSC from ASR is that its 4 digits]Fourth: Once on the ATSC press the down arrow to lock it in place. Now you are ready to modulate the H-HDMI-RF-Petit over the air with ATSC! In-depth system changes like switching the modulation format can be done from the GUI which is used through any web browser once connected to a switch or a PC. This is a link how to the pdf explaining how to connect it to PC https://thorbroadcast.com/upload/files/394/how-to-connect-h-hdmi-rf-pettit-to-pc-via-ethernet.pdf
Answer:
Yes, please set the HDMI modulator to ATSC modulation, The tivo support ATSC off-air, doesn't support Cable DVB-C j83b modulation. Scan Tivo tuner, it will find generated by the modulator digital channel
Answer:
So long as the Apple TV is outputting broadcast resolution that our modulator can see; the HDMI input will only detect common DVB resolutions, 480i, 720p 1080i/60, 1080p/60 or 59.95 etc We have many customers using the product like this. Works great so long as you set to any of this video formats outputs from your device
Answer:
So our unit is a modulator, just like the Drake units you have. So essentially if the Drake units are on fixed RF channels, you need to find a channel that' open/clear. If the drake units are broadcasting on channels, 20-28 then you can place our device on channel 29 so it is not being used. Furthermore, you need to also add our unit to the combiner. If the Drake combiner is only an 8 port and all being used, you can use a simple 2 to 1 combiner, the output of the Drake units, and the output of our units into the 2 to 1 combiner, then the output of that will have channels 20-29 now. This can be directly injected into the amplifier you have on hand and into the rest of your coax infrastructure. You can keep adding modulators, you just need to add them via a combiner like the drakes. So if you want to add 8 more Petite modulators, just get another 8 to 1 passive combiner to combine all the Petites, same as the Drakes, then you can combine the Drakes and Petites by using a second 2 to 1 combiner, or just loop the output of the drakes into one of RF input ports on the second combiner. You just have to make sure all of the units are outputting their programs on different RF channels. By doing this you can add as many units as you have available channels, which is about 135 on the RF QAM spectrum. Each output from each modulator just needs to be combined, so long as they are set to different channels, this should be a seamless addition. Let me know if that makes sense. I can assist in breaking down the process a little further if you like. We have also 4CH H-THUNDER-4 or 8 channel integrated HDMI modulators H-HDCOAX-8, it might be more convenient than using separate Pettit's: there are the links : https://thorbroadcast.com/product/1-4-8-hdmi-digital-rf-encoder-modulator-full-hd-up-8230.html/238 https://thorbroadcast.com/product/1-8-hdmi-digital-rf-modulator-cc-closed-captioning.html/95
Answer:
The quick answer is Yes, you can combine Cable RF or ATSC off-air RF signal with our modulators. What kind of modulation are you using on the Pettit modulator? cable QAM or ATSC? Please note that cable TV's are using QAM, so please set the modulations to QAM, that could be one reason. The Petit modulator has a passive 2x1 combiner built into the unit, The combiner has 4.5db loss if you are going from one unit to the second, the Cable TV signal is losing about 9db. Instead of looping through please use external 3x1 combiner, the power from your Cable TT company and power from our modulators needs to be set to similar levels. If you do not have an RF meter, you would need to do some troubleshooting, and educated guessing to see if you can find a happy medium. Please connect it to the combiner first and scan your TV, if you still have only 2 channels from the modulator, please attenuate our signal 5 or 10db on both modulators and scan again
Answer:
We have actually better unit for you H-THUNDER-4 https://thorbroadcast.com/product/1-4-or-8-hdmi-digital-rf-encoder-modulator-8230.html/238 Distributing HD signals over existing coax is a very simple task. Our unit will take 1 or more videos and it will create Digital CATV RF QAM or ATSC Off the air channels, By scanning the TV's you will find them and display it. Few Questions How many videos from the PTZ cameras do you have? What is the format of SDI or HDMI? Drake 300VMF+ is an analog modulator, so it created Analog NTSC modulated channel. Our modulators create digital QAM or ATSC, so the TV's in the retirement home need to support it. If the customers would have old tube analog Tv's, QAM STB's would be needed.
Answer:
Please check if your second "link" LED is ON, it indicates that our modulator recognize HDMI video resolusion, If the LED is OFF, please change the Video resolution output on your Chrome stick or Fire stick device video output menu to 720p, 1080i or 1080p/59.94 or 60Hz Did you try to rescan your TV? Are you using QAM or ATSC modulation? Our unit ships with QAM out of the box, so double-check what you are using as CATV input standard on your TV and Rescan the demodulation standard. Also, the RF output power might be too high for some TV's please add 10db attenuation on the Modulator setting page, For the TV's which do not support DVB-C Annex B QAM, please set our modulator to ATSC and re-scan the antenna input. If you need support our number is 800-521-8467 ext2, we will be happy to help
Answer:
Please Log in to the unit via NMS, please go to SYSTEM PARAMETERS MODULATION SETTINGS Password is THOR Change format to DVBT, there are the other selections for ATSC, Annex A, Annex B, and ISDB-T
Answer:
Our digital modulator will work in a very similar way as your analog AV analog modulator, but it will generate a much better video quality image. The generated image will be like the original HDMI plugged into the TV. Our modulator will take that HDMI source form your satellite receiver with the following resolutions, 720p/1080i or 1080p 59.94hz/60hz will generate any channel the same way as the analog modulator. The TV will scan this new digital channel and it will display truly HD beautiful high-quality image. we have many customers in Saudia Arabia and attire the middle east region, and because our modulator generates all world modulation standards, it works anywhere in the world on any standard TV, you will use DVB-C QAM annex B, same as in the US. We have also 4 and 8 HDMI modulators available, there are the links: https://thorbroadcast.com/product/1-4-or-8-hdmi-digital-rf-encoder-modulator-8230.html/238 https://thorbroadcast.com/product/1-8-hdmi-digital-rf-modulator-cc-closed-captioning.html/95 or this is 8 channel hybrid H-Hybrid-RF-8 modulator equipped with 8HDMI and 8 SDI inputs https://thorbroadcast.com/product/8-channel-hdmi-and-sdi-clear-catv-rf-modulator-qam-8230.html
Answer:
Thank you for your feedback. The most important settings can be accessed by from front panel LCD and buttons, you can change it modulated channel number and modulation format Cable QAM or Off-Air ATSC We realized that the IP settings connection might be confusing, this is why we made a very detailed PDF IP connection document describing step by step options. Also, we created an educational video and posted on youtube: PDF https://thorbroadcast.com/upload/files/394/how-to-connect-hdmi-rf-petit-to-pc-via-ethernet.pdf video instructions https://youtu.be/TogiV2mxAUc The unit has the ability to be set to DHCP and receive an IP address automatically, the only problem with that is that many consumers would not actually know what the assigned IP is, that information would be available by logging into your residential Gateway or cable modem, but it is also not so straight forward, we chose the option to have static default IP address 192.168.1.10 because many routers operate on 192.168.1. XX subnet, in case, if that subnet is different than customers, they can temporarily adjust their network nic card to this default subnet. This is why we created more detailed documentation and instructions; we hope it clarifies this. Once you log into the unit and adjust the desired channel and modulation, this is most likely the only one time you need to do that, you will also have the option to set the unit to DHCP; after the reboot the modulator will get its own IP from the router and will be automatically accessible on your network, but you will need to log into the router manually to check assigned IP address the unit will be listed as THOR PETIT,
Answer:

So if you have an old RF modulator, you're essentially making a channel; so on the other end, you need to decode that channel.

https://thorbroadcast.com/product/catv-rf-and-atsc-rf-to-hdmi-decoder-stb-8230.html

You can also take HDMI output from your Video source and make a Digital channel using H-HDMI-RF-PETIT modulator, HDMI IN - QAM RF Out, then decoded same way using QAM STB H-STB-QAM-ATSC

Answer:

In order to circumvent the 500ms delay from the encoding times between the HDMI and Looopout you can bypass the HDMI completely and utilize both the RF ports on the Petit. Even though they say "RF IN" and "RF OUT", they can both be used to send RF signals Out without a delay because they are both being encoded at the same rate. You can even connect an RF Splitter/Combiner to those ports so you can connect TVs all throughout your facility at the same encoding time. 

Answer:
The modulator needs to process the video content, and it has about 250ms delay, please find a link to the test we did.
The best way to eliminate any delay would be not to use the HDMI pass-through by connecting your local TV to the same modulator RF output.
RF output connected to 1x2 or 1x4 RF splitter/combiner and connect all tvs to the coax network, this way all TV's will be in sync because all of them would decode the same RF signal.
If you do not have an RF splitter, you can actually connect local TV to the petit RF Input, The input port will have this channel viable as well but 3.4db lower than output; but that will work for your needs.
Answer:

Do you have any more information about what the application necessitates besides HDMI? Do you require certain resolution or audio capability? Is the latency or size of a unit an issue? We have a plethora of units that can fit the information you provided. The Petit would seem fine, or the AC3-CMOD, we also have multi-channel units like the Thunder-4... All can take HDMI and output to RF

this is a link to the 8 channel H-HDXOAX-8

https://thorbroadcast.com/product/1-8-hdmi-digital-rf-modulator-cc-closed-captioning.html/95

2) The modulator should be able to feed all of the TV's. I would think you'd want to put it near the other Comcast gear. But it does it's 2 blocks away? Is there another headend room or electronics closet closer to the facility you can put the equipment in? In either case, you can use the RF Petit, or you can use something like the Thunder-4 for multiple HDMI inputs. All you need is a coax combiner, to get the feed from Comcast and our units together. You also should find out which channels are being unused by Comcast so you can put the QAM channels on open frequencies. Comcast also to Inject local video insertion at channel 134 it will show as a channel 1901,1902,1903,1904

Answer:
So in order to put 2 inputs on one RF channel, you need a slightly more advanced unit with a higher grade encoding chip that can handle the task. 

If you plan on only needing 2 HDMI inputs and don't plan on extending to any further channels, we have a 2 HDMI input model that fits the bill
 
 
If you think the client will need more at some point, we also have a 4 channel HDMI input modulator that will work. 
All these units are in stock and will do what you require. 

Documentos
downloadh-hdmi-rf-petit-user-manual.pdf
El manual del usuario está disponible solo para usuarios registrados.
downloadh-hdmi-rf-petit-user-manual-and-ip-nms-connection-instructions.pdf
El manual del usuario está disponible solo para usuarios registrados.
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