If you really want to distribute DVB-S2 modulated TS in the L-Band, then this is probably the cheapest solution:
https://www.ebay.de/itm/Sencore-DMS-3503B-DVB-S-DVB-S2-Digital-Media-Streamer-with-2-Dektec-DTA-107/272686009573If you want to CHANGE the TS stream and create your own MUX, including HBBTV (note: this is a standard only used in the EU, as far as I know, so this is why non EU forum members don't know what it is), then you need to:
1) De-Multiplex one or several TS streams
2) Create your own TS streams (for HBBTV, using your own MPEG4 files, etc.)
3) Multiplex the different TS sources into one single TS stream
4) Modulate that TS stream into DVB-S2 with output in the L-band (950MHz-2050MHz)
This requires several professional grade IRD (to receive and demodulate DVB-S/S2/C/T/T2 transmissions and pass them one through ASI-Out), MPEG4 encoder (to be able to feed video/audio like composite video, YUV, VGA or HDMI signals), multiplexer (to create the final TS stream), DVB-S2 modulator (to L-Band) and spectrum analyzer (for monitoring). If you were to buy all of this new, then consider a pricetag from 20.000€ to 100.000€.
It would be cheaper if you just want to re-transmit a TS-stream without changing it. Then you "just" need a professional IRD with ASI-Output and a DVB-S2 modulator. Here is where you can score with second hand Dektec products, as they are reasonably cheaper. Take care to check if they come with software licenses! Without such licenses, you need to program the software yourself, which might be not so easy...
Over the years I collected all these devices (execept DVB-S2 modulator - even second hand devices are still too expensive for me). I have several IRD, modulators for DVB-T, DVB-C and DVB-S, as well as, MPEG2 and MPEG4 encoder. Some of the IRD include a TS multiplexer. I use these devices for test purposes. Using them 24/7 would bring two additional issues: these devices are LOUD, generate HEAT and consume a lot of POWER. You definitely need a climate controlled room to operate them in production environment.
I think it makes no sense at all to distribute DVB-S2 signals in end-user homes. DVB-C offers much better bandwidth at lower cost, DVB-T has less bandwidth but receivers are normally builtin the TV or can be purchased for little money. Unless there is a real reason, I would rather consider distribution over IPTV.
Regards,
Vitor