multiswitch recommendation

you use 4x Satellite IF amps and four x 4 way Satellite IF splitters to split the 4 x Quattro Sat IF feeds . Then you drive 3 or 4 multiswitches that have 16 outlets.

Up to about 121 multiswitches is easy

All is here. http://www.emp-centauri.cz/

You can get 4 x two way splitters with trunk by pass in one box. You use double ended push on plugs to daisy chain the 4 x trunk outs on one side to 4 x in on next splitter
Other edge goes to Multiswitch. You can daisy chain eleven splitters without a further amp. The "Trunk" connection is about 1dB loss and the Side connections about 11dB loss.

--> denotes four cables.

Quattro -->Amp-->Splitter-->Splitter-->Splitter-->Terminations 75 Ohm  (or Splitter or Multiswitch
                  ||||       ||||        ||||      
                Multiswitch Multiswitch	Multiswitch	  

No. those are TV/Sat diplexers to join or separate TV aerial and Sat If

4x Sat IF amps to drive Spitter Trunk, connected from Quattro
http://www.emp-centauri.cz/products.php?id_kateg=5&id_pkateg=21&id=217




For 3 x 16 way multiswitch
Use two Quad IF splitters:

Feed 2nd splitter and 1st Multiswitch

Then feed 2 & 3rd switches (no terminations needed)

Frequency range 950-2300 MHz
Tap loss 5 dB avg
Trunk loss 2 dB avg
http://www.emp-centauri.cz/products.php?id_kateg=5&id_pkateg=17&id=276


Connect up four 5 x 16 Multiswitches.

loss to 1st switch = 5dB
2nd switch = 2dB on Trunk + 5dB = 7 dB

3rd switch on end of Trunk = 2dB + 2dB = 4dB

Check out their catalogue. They have all kinds of stuff.

if you don't need to add a 4th 16 out switch ever, maybe just 3 of the switches with 4 sat IF loop through.

Also consider if you should not be going for system with 2 x LNBs, or 4 x LNBs option.

If you don't really understand how these things connect or are unsure, seek professional installer.

If he doesn't know what to order, it's unlikely he knows how to set it up.