Liono
Super Pro Member
I personally think that we're probably not able to explicitly state what each port does, as the modem probably assigns functionality and bands dynamically to each port depending on receiption and what MIMO type is being used. Also currently as we only have NSA 5G we may not be seeing the full functionality that the modem can ultilise when SA.
Agree, yes I found the Low loss RF switching chip here in another thread I posted in:
Post in thread 'Zyxel NR5103E ports , which does what?' https://www.ispreview.co.uk/talk/threads/zyxel-nr5103e-ports-which-does-what.38891/post-303738
I've examined the circuit closely.
There are 4 internal antennas connected by I think MHF4 connectors on the board.
Between the connectors/antennas and the modem there is the digital equivalent of a SPDT switch.
When the switch on the back of the hub is changed, it flicks between the MHF4/internal antennas and the rear TS9 ports.
So, when the switch is turned to external antennas, all 4 internal antennas are disconnected and external ports connected.
Therefore all 4 external antennas replace the internal antennae and will also be 4x4 MIMO as a result.
Agree, yes I found the Low loss RF switching chip here in another thread I posted in:
Post in thread 'Zyxel NR5103E ports , which does what?' https://www.ispreview.co.uk/talk/threads/zyxel-nr5103e-ports-which-does-what.38891/post-303738























