Tvheadend

For Orangepi PC working installation you need:

Armbian_5.90_Orangepipc_Ubuntu_bionic_next_4.19.57.img

Set static IP address (optional).

apt-get update && apt-get upgrade

With armbian-config switch to other kernel select 5.4.20-sunxi.

In /lib/firmware add "dvb-demod-si2168-b40-01.fw" firmware.

Install Tvheadend.
I use:

sudo apt-add-repository ppa:mamarley/tvheadend-git-stable
sudo apt-get update
sudo apt install tvheadend

I had problem with receiving DVB-T2 Tv channels.

Whit steps above you can do it.
I needed two days, and a lot of google support.