How to amplify 3G signal using 3G antenna in 4G MODEM(2xTS9)?

S

Selengeek Ou2017-09-17 12:07:02

USB

Selengeek Ou, 2017-09-17 12:07:02

Help
There is a 4g modem e8372 and the signal is only 3g
How to strengthen 3G? in which modem connector to connect an external 3G antenna?
In general, are these connectors only for 4G or 3G too?

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