Hi Johnny.B, how are you keeping Buddy? I hope well.
Thank you kindly for replying.
I waited and waited for replies from China about 900UHD BUT nothing happened, got none.!
So decide to look around, there ARE plenty on FleaBay UK and DE but still not the right price.
Too expensive in £ and the DE Sellers will NOT send/deliver to UK.!!!
So I am stuck in a difficult dilemma, but will keep searching.!

I tried a ZgemmaH7S 4K Super Speedy Core/DMIPS Box.
But ALL sorts of problems, Tuners don't want to work.
Sat Dish Cable on DM works perfect, change it to H7S don't work.
Scan Fails, No Channels found, NO connection to Sat Dish.
Tuner Configs are OK but still NO Signal on H7S.

I was advised by a dear mutual friend, to leave these Boxes alone and on his advise I returned it and started searching again for a DM900.

That's why I am asking, I did some reading about LNB's and Diseqc Switching and as far as I understood it should make NO difference to the LNB whether you use a DVB-S or DVB-S2 Tuner or Triple MultiStream Hybrid or FBC Twin or FSC Twin.!
I just was NOT sure.

My LNB's and Diseqc Switches are pretty new about 3 years, so they should still be OK
I checked ALL the Cables and ALL F-connectors = ALL OK.

The only difference apparently with the DBV-S2X Tuners is that they are more Sensitive and Faster, which basically means much better.!

So I am thinking if the H7S don't work and they have the same Triple MultiStream Hybrid Tuner with 2x DVB-S2X / C-T2 as the 900UHD,
will that also NOT work.?
It would be silly to buy one and find it does NOT work.

I need to find out why the Zgemma H7S Tuners failed and don't work.
The Seller exchanged three different Units and ALL with the same results.
Now you understand why I am asking these really basic Q's.

Could it be that my Signal is too strong from Sat Dish.?

OK i ordered a V9 iBravebox Sat Finder with Capabilities: Full HD DVB-S/S2; H.265 compliant, Fully DVB compliant.
Will see what this tell's me.
Will keep you updated.
Have a nice week-end my Friend
Stay SAFE
AJP