Review on 🦆 Waterproof Omnidirectional Rubber Duck WiFi Bluetooth Antenna - 2.4GHz 5GHz RP SMA Male Omni Lightweight Dual-Band Antenna (Fixed Angle) by Tony Battaglia

I needed to add an external antenna to a radio with poor bluetooth coverage. (The internal Bluetooth antenna was housed in an all-metal case by the manufacturer. This was not a good idea as it was almost impossible for a Bluetooth signal to leave the case.) TREDALT-TEC 2.4GHz 5GHz omnidirectional The Rubber Duck WiFi Bluetooth antenna was the solution. I very carefully connected it (via a small coaxial cable) to the Bluetooth module's antenna output. I was expecting an antenna with an SMA connector. The product description and photo on the Revain page shows a male SMA antenna. Unfortunately they sent me a mailed SMA antenna instead.