HowTo: TDA7492/CSR8635 - External antenna mod to improve Antenna amplification/range - Nerdiy.de - Nerdy DIY HowTo's about electronic, 3D-printing and more.
USB CC2531 CC2540 Sniffer Module Bluetooth 4.0 Protocol Analyzer With Antenna | eBay
iHaospace BLE 4.0 CC2531 Zigbee Sniffer Wireless WiFi Board Bluetooth Dongle USB Programmer Downloader Module with External Antenna: Amazon.de: Computer & Zubehör
ABBY07B Long Range Bluetooth 5.1 USB Adapter with External Antenna - LevelOne
Long Range Bluetooth 5.0 USB Adapter for PC, High Gain External Antenna BT Dongle Support Desktop Laptop Notebook EDR | Walmart Canada