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Digital single-channel FULL HIGH DEFINITION modulator

Product Code: JH-EDMOD-01
Digital single-channel FULL HIGH DEFINITION modulator.


  • HDMI DVB-T RF Modulator
  • 1080p High-Definition over RF
  • Converts an HDMI signal into an HD digital DVB-T compatible signal
  • Cascadable
  • Requires a DVB-T or DVB-T2 compatible TV (must be 1080p or 4K UHD)

Connect any HDMI device such as a Satellite Receiver, CCTV system, Blu-ray player, TV Box, etc and watch it in crystal clear Full HD 1080p over a coaxial RF system. You can also watch on many TVs using a passive splitter or an amplifier (explained below).

If you already have an existing Standard Definition RF distribution system but your device is in High-Definition, just swap your existing RF modulator to this and watch in High-Definition 1080p on a DVB-T compatible Digital TV (such as a Freeview or Freeview HD TV). The cabling is exactly the same.

Minimal Delay
Less than 0.8s delay from the HDMI device, making channel changes super fast. The quickest in the industry! Furthermore, if using for video only devices such as a CCTV system, this can be reduced to less than 0.5s making mouse movement extremely quick (please contact Technomate Support for further details).

Apart from the UK Channel 21-69 frequencies, the TM-RF HD is also compatible with all UHF international RF systems. You can configure Bandwidth, Constellation, FEC, etc to be compatible in your country.

Connect Multiple Sources
Can also be cascaded with up to 35 modulators in one system so you can watch different devices on different TVs! Such as Satellite on TV1, another Satellite channel on TV2, CCTV on TV3, etc.

All settings are controlled via the onboard menu screen and buttons.

Installation Notes:

A passive splitter can be used. Furthermore, mains powered amplifiers/splitters can also be used as well as bypass models which can send IR Infra-Red remote control signal. If using a powered amplifier, please use the included attenuator.

Adding an Aerial:
If you’re connecting an Aerial into the system, you will require a 2-Way DC Pass Splitter. You will need to connect the aerial into one of the two outputs on this splitter (marked OUT) and the HD-Modulator combined with the included Attenuator to the other output on the splitter. Then connect the input (marked IN) to your television, amplifier or splitter.

Where to connect the Attenuator:
If connecting the RF OUT of the TM-RF HD directly to an amplifier, just add the Attenuator in between the two; if adding an Aerial into the system, add the Attenuator in between the RF OUT of the HD Modulator and one of the outputs (marked OUT) on the 2-way splitter

Lip Sync:
The HD Modulator has been tested with many devices such as Sky, Virgin, BT, Blu-ray Players, Playstation, Xbox and there are no issues. If you are having issues, please contact us

This only works on 1080p Full HD & 4K UHD TVs. If your TV is 720p HD Ready, it will not work directly however, you can use a Freeview HD box (DVB-T2 box) with the HD Modulator to make it work on an HD Ready TV.


  • HDMI DVB-T RF Modulator
  • 1080p High-Definition over RF
  • Cascadable
  • Send 1080p High-Definition video quality with audio over an RF distribution system
  • Converts an HDMI signal into an HD digital DVB-T compatible signal
  • Requires a DVB-T or DVB-T2 compatible TV (must be 1080p or 4K UHD)
  • LCD screen for easy setup & configuration
  • HDMI Input
  • DVB-T COFDM Modulation
  • Channel Name Edit
  • Compatible with international standards
  • Bandwidth – 6Mhz, 7Mhz, 8Mhz
  • Configure: Bandwidth, Constellation, FEC, ONID, LCN
  • USB – software updates only
  • Wall Mountable Metal Housing

Inc VAT: £238.80
Customer Reviews
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5 Stars
R Ryan
“I purchased this HD Modulator to replace an analogue one I was using to display CCTV images. It is a very neat, compact piece of equipment that is ready to go out of the box (although it obviously has a multitude of adjustments if required) and delivers outstanding picture quality within minutes of turning it on; very impressive!”
5 Stars
Mike K
I found this unit having struggled to find a wireless HD HDMI solution that worked. I was originally looking to distribute Sky HD around the house via Ethernet, Coax cable or using mains adaptor plugs. This seemed like a much neater solution with all the work taking place at the base. I'm pleased to report it was easy to install, pretty much plug and play. The default DTV output frequency adds a TV-1 channel 800 which is one step back from BBC1 SD, DTV Channel 1. The signal is as strong as the regular DTV channels and the Sky magic eye system works alongside. The routing is aerial socket to unit and then unit to Sky box (or similar). The modulator has two satellite style male RF outlets and comes with two converters to female aerial sockets for regular aerial cables. You will probably need an HDMI splitter (and additional HDMI cable) so you can still run Sky to your main TV or AVR. The box itself is well built with a solid metal case and is very neat. The instructions are detailed but if you need to change frequency some further advice might be needed. It does work perfectly out of the box but some knowledge of DTV channels would be needed if changing from the factory settings. The good news here is A Class Technology have excellent customer service with online chat help live during working hours so they would help if you have any questions. In summary this is not a cheap solution but it is very fairly priced for an A Grade product that works without encoding or running extra cables.