Solution B will not allow for use of the upper and lower bands.
Those 4x4 multi switches inputs are V 0Hz, H 0Hz, v 22kHz, h22kHz.
There are channels on both H and V polarity.
9e Channels on frequency like 12466 V 41950, Persidera channels is on the high band, 22kHz "ON"
9e Channels on frequency like 12747 H 2750, M7 Deutschland channels is on the low band, 22kHz "OFF", or 0kHz.
You would need this
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Note the first option uses a LNB that has an output for ONLY that polarity / band. If you connect a set top box direct to one port of this LNB you will only get the TP's / channel for that one polarity / 22kHz tone (band) setting.
The second option has a LNB 4 output type that has all polarities and bands on each output.
If you connect a set top box to this type of LNB you will get all the bands and polarities from the one output.
I have found it difficult to see what type of output a 4 port LNB has from some LNB's on sale.
I hope users like
STRETCH have more of an idea what these types are called in their descriptions.
Your unicable LNB for 19e could replace the 19e LNB in the second option with a 4 output splitter between the output of the LNB and each input of the 2way DiSEqC switch for each box.
If you Unicable LNB has 4 outputs, then use it in place of the LNB in option two I show.
The LNB for 9e in option two could be replaced with the LNB for 9e shown in option 1, using a 4x4 switch and separated 4 output LNB.
Yes finding a way to use more than one set top box on satellite dishes / LNB's can be complicated.
I had some failure when I started with using the wrong switch / LNB.
I now use a 16x16 powered switch, but one that only outputs 13v and no 22kHz tone. I have had to rotate LNBs on a second dish so I can get Horizontal with out 18v. Even more complex again.
Owen
Edited
To post this I needed to power off my internet modem to force the modem to change IP address as the IP it had this morning was listed on a spam site as a spammer.
Tech gets you in all ways!!
Dishes; 3x3m, 2.4m and 4.1m, 10+ ku, 2 movers, USARLS. V8 Combo, Pro, V8 Golden, Nova V8Pro2, GTC, Super.V7HDs, Combo and V7s V7Plus Finder, Finder-Meter V8X / UHD V7Pro GT/XCombo. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.