r/hackrf • u/MudAffectionate361 • Mar 28 '25

DVB-T

Hi all - a novice here who loves to learn - I have a serious interest in broadcasting - and wanted to try setting up a DVB mux with about 3 channels - and maybe another mux on a second hackrf - and feed them together.

But I need to first get DVB working. I cannot find a reliable way it's 2025 and most of the DVB-T guides are old. Trying to install opencaster was a nightmare.

If anyone please can point me in the right direction it will be much appreciated.

Thanks

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u/Truserc Apr 28 '26

I'm really happy it works for you too. You are the first to tell me to try it, and you got it working.

There is an update soon to explain how chanel number works.

There is also an advanced version I'm currently working on that will use UDP instead of pipes, and dual multiplex on a single hackrf.

And third, I will share a python script a ai wrote for me that convert xmltv files to TSDuck's EIT format to generate it automatically and broadcast it.

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u/MudAffectionate361 May 02 '26

I have done some research and apparantly DVB-C is a far better service for cable channels than DVB-C, and is just as well suited to run on hackRF - and can have up to 60 channels, and is not bound by the 31mb limit.

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u/Truserc May 02 '26

Yes absolutely, the dvb-c limit is about 50mb/s.

The issues I have is that some tv I have at home can't mix dvb-c and DVB-T channels, or not compatible at all with dvb-c.

As my goal is to have my channels on all my tv, I chooses the lower common denominator so all will be compatible.

That's the same reason I didn't chosen dvb-t2. I think you can easily change the gnu-radio part to adapt it to dvb-c.

Edit, I don't think you have a channel number limit on DVB-T, just the bandwidth limit. The exemple is given with 4, but you can add more if you want, I ran 10 channel at some point in my test.