For the time being I picked up (2) pack of Midland walkie talkies from Walmart for $60. They came with earpieces and work surprisingly well. Really adds a level of safety when working near each other. I will see what happens with these for a few months.
I really appreciate all the responses and suggestions. Haying is like a maelstrom. It’s a frenzy of raking & baling as fast as you can hold on. Always trying to beat the rain and rake/bale the next field.
I am not perfect, but have an essentially accident free record. My son is inexperienced, but surprises me with his awareness.
What the best would be is a communication device, like a cell phone “on” all the time with a head set. That way no hand has to push the mic button. With the walkie talkies, we CDL ip the mics to our collars and we always say “10-4” or “copy” to acknowledge each other. The earpiece is very easy to hear over the machinery, even if I listen to a little talk radio, I can hear perfectly.
We both carry cell phones, too. Cell phone speakers are just not quite up to snuff, but I could get an earpiece I suppose....
I guess we could also do an open call to each other as long as we are raking & baling, but so far, these cheapie WTs are working better than I expected.