Types of connectors for attaching external Wi-Fi antennas
How can I identify the type of antenna connector used on the router's body? What connector should be on the external antenna when connecting to the router?
Some models have removable antennas, so that you can connect an external Wi-Fi antenna. The device's body uses an RP-SMA type connector.
Note
It is not the pin, but the threads that define the type of connector. The RP-SMA Female connector always has an external thread, while the RP-SMA Male connector has an internal thread. The RP-SMA Male is always screwed on top.
A plug is when the thread is internal.
A Jack is when the thread is external.
Removable Wi-Fi antennas
Some Keenetic models have removable Wi-Fi antennas and are equipped with a jack for an external Wi-Fi antenna (purchased separately).
It uses a pin-type RP-SMA connector on the body:
RP-SMA (Reverse Polarity SMA, sometimes referred to as SMA-R) connectors have the opposite of the SMA connector: where the thread is internal, there is a hole in the middle, and where the thread is external, there is a pin in the middle. The RP-SMA type of connector is also referred to as a reverse polarity SMA connector.
RP-SMA connectors come in two variants:
RP-SMA with a male connector part |  |
RP-SMA with a female connector part |  |
As the router body uses the RP-SMA Female connector type with a pin:
The external antenna to be connected must be a connector RP-SMA Male with a socket:
On the Giant model, the antennas are separated by a band, one after another. When viewed from the front of the device, the antennas are arranged as follows:
The Peak model supports MIMO 4x4, and therefore, all antennas are dual-band.
Important
The internal path from the built-in Wi-Fi radio module to the RP-SMA connector has a wave-making resistance of 50 Ohms. It is recommended to connect an external antenna and cable assembly with the same wave-made resistance.