You’ve got no chance with a 55cm. I doubt you’ll even find it, I couldn’t with a Triax 65cm. Apparently it is possible with a Sky Zone 2 but going multi LNB with a sky dish isn’t advised and you’ll have minimal rain margin.
16e is sandwiched in between two really strong satellites, 13e and 19.2e. To get the beam and prevent the swamping you need at least a good quality 80cm and even then, it’ll go off in strong showers.
I have a Triax 88cm and it really has to hammer it down to get pixelation - to the kind of levels I lose 19.2e and 13e too.
People rave about Frecarro Penta 85’s. Never tried one myself. Supposed to have excellent gain for their size.
The TD88 I have is another good ‘smaller’ dish.
13e and 19.2e will be ok on a 60cm.
Agree with Azimuth above. I have done a multi lnb set up, both with an 80cm and a 97cm dish, so just under the 1m legal requirement.
I set up the following satellites using a combination of Inverto Black Ultra and Venton( Ultra thin body) LNBs.
I centred the dish on 16E to maximise the signal from that satellite. I was then able to add...
7E, 9E, 13E to the left as you look up to the sky and 19.2E, 23.5E and 28.2E to the right as you look up to the sky standing
behind the dish. That's 7 lnbs on one multi-bracket. All signals came in well and had rain margin in normal moderate
UK rain. It's only during a rare monsoon style downpour where there have been signal issues on the outer sats and the
weaker transponders.
Because of the spacing between 13E, 16E and 19.2E I used an Inverto for 16E, and then a Venton on either side
for 13E and 19.2E, because they are really slimline and very good. The Inverto is brilliant for weaker signals.
You can pick up 13E and 19.2E on a 60cm, but you should centre it on 13E, rather than 19.2E as 19.2E is stronger
than 13E.
Whenever doing a multi-lnb setup always try to centre on the weakest satellite to maximise your signals on the outer
satellites.
Good luck and please let us know how you get on and how we can help in any way.