I'm your vehicle baby...
Join Date: Jul 2006
Location: Appleton, WI, USA
I would look and see what is available to general aviation. Back when I used to fly I had a portable intercom that wired up 4 headsets and ran off the cigarette lighter plug.
I am sorry, but I do not remember the brand right now. However, the unit was easily small enough to fit under a set or behind a cowling.
With this much hubris, how could I ever be wrong!
06 K1200 GT "Carina" - Deep Blue Metallic (Fastest Color GT)
07 R1200GS Adventure - Gus
01 Buell Blast "Thumper" - No Power, vibrates and shimmies at speed. What Fun!