We have multiple Dishes and LNB's and both Old and New Receivers! All work fine whether at Home or Down South.
No We do not get the New HD Channels on the third Bird!
We only subscribe to the bottom tier anyway so there isn't much difference for Us, maybe We lose a couple of Channels.
Our 600 series boxes use the New 3 SAT LNB.
Our Older Boxes use the Older 2 SAT LNB
All Dishes are 75 Cm so everything is interchangeable.
I find it easier to Aim the Dish using the Early system, but I am still using the Manual mounting method.
One Important TIP. Leave at least one Receiver at Home ,connected and plugged into Electricity.
Whoever a receiver refresh is required do it via the internet! Never phone the provider or give away your location while out of the country.
Rob & Jean
98 Dutch Star Diesel Pusher ..07 Honda CRV AWD