Siemens SCALANCE MUM853-1 - Page 54

Connecting antennas
The device has four antenna connectors of the SMA female type. The front of the device features
the connectors A1 and A2 (left picture) and the top features the connectors A3 and A4 (right
picture).
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A1 Antenna connector R1 A1
A2 Antenna connector R1 A2
A3 Antenna connector R1 A3
A4 Antenna connector R1 A4
You can either connect an external antenna directly to the device or connect it with a 󹪞exible
connecting cable.
Note
Antennas
• A1+ A2
An antenna must always be connected to the antenna connectors in order to use 3/4/5G
connectivity.
• A3+A4
Optional. The antenna connectors are required for additional MIMO download streams. If
you want to use GNSS, connect an antenna with a clear view of the sky to A4.
Connection
6.4Antennas
SCALANCE MUM853-1
54 Operating Instructions, 03/2023, C79000-G8976-C650-05