Is it possible to use WiFi antennas for 3G modem?

Question

Huawei

The question is this - I have a wireless network card installed in my netbook with two sockets for antennas, respectively, there are also two antennas. Today I installed a third one, taken from the router, into the case through the IPX-RP SMA adapter, using the old antenna from the D-Link router. Total - one antenna is not connected. Can it be connected to a modem? Those. Will it affect the signal level? Modem Huawei E173, if anything.

Answer 1

The wave frequency of mobile network and wifi is different. Therefore, the signal amplification will be insignificant.

Answer 2

In terms of efficiency, it is equivalent to a piece of wire of arbitrary length. Here you can read about the calculation of simple antennas.