BNC connectors are very often used in radio technology and measurement technology. In former times many amateur radios (handheld radios) had a BNC connector, today this connector is used in amateur radio mostly for IF outputs or similar. BNC connectors are not waterproof, they are not intended for outdoor use. The advantage of BNC connections is the easy and quick use with a bayonet lock (instead of thread).
In the WLAN area, so-called RP-BNC connectors are used by a few manufacturers. RP stands for Reverse Polarity, which means that the inner conductor has a reversed polarity. Instead of a male pin you find a female contact and vice versa. This causes a bit of confusion between the terms plug and socket – usually everything with an external thread is called a socket, everything with an internal thread is called a plug, regardless of what the inner conductor looks like.
Many of the connectors offered here are crimp connectors. This means that they are not soldered on, but that the outer braid is placed on a shaft, a sleeve is placed over it and this is then closed with a special crimping tool. The inner conductor is usually always soldered.