Hi Bruce, I'm just starting FPV because of your backpack video and Sony 600TVL review. So I don't yet know how useful I will find audio. I want to etch my own, so if it is something that I can just not solder on until I need it then great.
Have you found a reliable supplier yet (or even just a mediocre one, if they're cheap modules)? I would like to order the modules now so that they are here by the time you release the schematics
Thanks very much!