Tvheadend

If it can serve, I share the tvheadend configuration related to my satellite system.
The plant consists of:
satellite dish 100cm
LNB Humax151 (unicable)
rotor Stab120 (usals)
tvheadend with TBS6902 (dual tuner S2) and two USB DVB-T

The SRC output of the LNB goes to the rotor, while the legacy output goes to a decoder.
TvHeadend is configured to use the TBS6902 dual tuner card, with lnb unicable (freq 1680 and freq 2040) and USALS rotor.
A decoder is connected on the legacy descent, while the other uses the unicable lnb (freq 1210)

I set 8 satellites, then previously created 8 Networks with satellite data.
Here is the configuration:

1-Over-the-air EPG should be deactivated (otherwise it starts to search all satellites by rotating the antenna)

2-Orbital position = 8 is the number of satellites to use
Motor Rate = 1428 is the most suitable value for the Stab120 rotor. It is the rotation speed in milliseconds for each degree at a current of 18V.
For the Stab120 rotor operating at Max. Speed: 0.7 ° / s (18V) 0.4 ° / s (13V) (from the manual specifications) we will have: 1 / 0.7 = 1,428 x 1000 = 1428.
In Site Latitude and Site longitude enter the relative coordinates, eg: Naples 40.510 - 14.140

3-Networks are predictive created with the satellites to be used.
Configure the 12.5W sat by specifying the rotor type USALS and Unicable type: Inicable I (EN50494)

4-Read only

5-set the longitude of the satellite.
In this case -12.5 (for the satellites on EST the value is positive ex. 30W -> -30, 13E -> 13)

6-set Unicable on the third frequency 1680 then SCR (id) = 2
I repeat the points 3,4,5,6 for the number of satellites to be used.
Remember that in point 3, the satellite network must be inserted, and in point 5 the longitude relative to the satellite must be entered.

After this phase proceed to the configuration of the second tuner:
This time "Satellite config" must be: "Unicable I"

The parameters will be: SCR (ID) = 3 with frequency 2040 (fourth frequency SRC) in network A: all the satellites previously set.

Notes: Small bugs:
If you edit something in the network (step.3) or if you enable and disable it, remember to check the Unicable setting (item.6) because it is lost for a bug.
If you use DVB pens with a DVB card, do not reboot the system, but turn it off and check that the USB sticks are off (if you press the switch) otherwise on reboot the adapters will be different from those previously configured.