Solution for bike-to-bike communication?

[JakEmAll]

I love how this information has been lost between generations/millenials

All you need is any radio (walkie talkie) that supports a "remote speaker microphone". No, you won't find it at a best buy.

Really good (commercial grade) ones take care of things like wind noise and other backgrounds.

Xer responding here. Radios are great when privacy is not a concern. It may not matter for some, but cb/ssb radios are talking to anyone and everyone able to access those channels within the range of the broadcasting radio.

 

[Merle Nelson]

Good point. Often forgotten. One time when it matters and it will be a big deal.