Amazon.com: Airplane Cockpit Intercom ATC Radio Recording Cable with Power Cable Adapter Audio Cable for GoPro HERO3 / HERO3+ / HERO4 NOT for Hero 5 and UP : Electronics
Nflightcam Aviation Audio + Power Cable for GoPro Hero5, 6, 7, 8, 9, and 10 Black – Nflightcam.com
Music Input and Audio Record Connect Cable for Intercom AUX Port – Rugged Radios