There was a bluetooth adapter/receiver that went into the car's aux port. Everyone had a generator whistle. This eliminated background noise and greatly improved sound quality. I stopped and struggled with background noise while on the phone.
πΆ Enhance and Expand Your Network with TP-Link AV600 Powerline WiFi Extender and WiFi Booster (TL-WPA4220 KIT)
44 Review
Wi-Fi adapter D-link DWA-140, black
46 Review
Enhance Internet Speed with TP-Link AC1200 Wireless Dual Band USB Adapter (Archer T4U V1)
40 Review
TP-Link Archer T4U Plus AC1300 USB 3.0 WiFi Network Adapter
29 Review
π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
π StarTech.com NETRS232 Serial to IP Ethernet Device Server - DIN Rail Mountable - Serial Device Server - Serial Over IP Device Server (Black)
4 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review