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Transmitting high definition television pictures is easier than you might think.

Hides in Taiwan sell a range of ready to go HD DVB-T modulators.

Prices start at around AUS $200 for the basic USB (UT-100 series) device.

Unfortunately the UT-100 is really only suitable for early versions of Windows (Win7 or earlier) as the drivers have not been updated for some time.

Hides also have a model which also incorporates a HD receiver.

Hides web site is at http://www.hides.com.tw/index_eng.html

All of their products are available on their eBay shop and they have prompt delivery to Australia.

If using the Hides USB modulator the simplist way to produce HD pictures is to use either VMix or OBS programs

OBS is freeware and is available in Linux and Windows versions.

VMix have a free version but it is very limited in available sources.

The hides software which comes with their USB modulator can talk to either OBS or VMix.

This makes a complete HD studio with the capability of special effects including green screen, mixing, clock insertion and text to name but a few.

A normal HD web cam attatched to your PC is all that is required for live ATV pictures using this system.

The Hides modulators output apprx 0dBm and will require careful amplification to the desired level of around 3-5 watts.

Mini-Kits in South Australia https://www.minikits.com.au/ sell a number of ready made or kit amplifiers for the task but be aware that linear amplifiers for DATV will only produce around 3-5% of their FM rated power.

The Alternative Approach

If you prefer more of the hands on approach a HD DVB-T modulator can be purchased together with a local oscillator and mixed up to the desired frequency. Make sure that any modulator you purchase can stream QPSK at 5Mbits.

A Stand alone camera HDMI camera or a PC with HDMI output can be connected directly to the modulator.

I recommend the ClearView TinyMod modulator available from Kristal Electonics in Townsville. https://www.kristalelectronics.com They have a range of devices suitable for both the DVB-T and DVB-S aficionados.

A list of components required for this approach are listed below together with links, there are many other ways to proceed but after extensive experiments this appears to be the simplist design.

Using the listed amplifier will achieve a clean ouput of around 5-6 watts suitable for use on VK3RBO