Add a Little Quindar to Your Comms for that Apollo-Era Sound - If there’s one thing that ties together all the media coming out of the Apollo era... - https://hackaday.com/2023/04/30/add-a-little-quindar-to-your-comms-for-that-apollo-era-sound/ #in-bandsignaling #classichacks #history #74xx123 #quindar #xr-2206 #apollo #intro #outro #beep #boop #fsk