Testet with Tvheadend 4.0.5 on OSMC 2015.06-1 stable with RPI2
When you have installed Tvheadend from the Appstore, then go to Tvheadend “admin” interface by using this URL http://osmc.local.:9981 or http://OSMC_IP:9981 and login with osmc/osmc (can be changed later).
First be sure that Tvheadend can see your DVB tuner under “Configuration” → “DVB Inputs” → “TV adapters” should look something like this:
Same approach should work with HDhomerun network tuner with the new build
that includes tvhdhomerun (libhdhomerun)…but on OSMC startup, TVheadend
need the network to be working when Tvheadend starts if it does not show
your hdhomerun tuner, try these options:
1. enable "wailt for network in "My OSMC" settings. 2. change from WIFI to network cable / ethernet. 3. restart Tvheadend "sudo systemctl restart tvheadend".
regarding setting the hdhomerun the correct type network, you can change it like this:
Next go to Networks, and add your “cable network” ( i have yousee) chose DVB-C and edit accordingly to your provider…
Yousee is like this:
Network ID can important in Denmark my provider Yousee.dk is “100”, if DVB-T 0… can be dependent on where you live.
Click Create when done.
Now go back to “TV adapters”, chose your tuner hardware, in my case “phillips TDA…” click it. (see first image).
Chose your “network” you have just created, enable the tuner and click “Save”.
Now after a few minutes it should scan the DVB freq, you can follow what happens in the logs by enabling debug like this.
First in the buttom right corner of the TVheadend page you should see this little “icon” 
Click on it and will pop up an white area box, now click the little “gear” wheel that now appears beside it. 
within a few minutes it should show something like this:
This part can take 30 minutes, after that go to “Services”, you should now see it populated with data like so:
Click “Map All”, and it will now check all channels.
This part can also take 30 minutes, but you are now done.
Read more about DVB-C here:
DVB-T here:
ATSC her:
I will add another post later with how you can add icons to channels and clean up tvheadend.