I’ve been giving some more thought to the car adapter concept. It would be neat to have something to pop your standard goTenna Mesh into and attach to the top of your vehicle. It could be shark-fin shaped for cool factor and to attract Parrotheads. Don’t laugh, even my little sister is a Parrothead. But I digress…
Having cracked open a GTM myself, the case takes up a lot of space. Even better would be a factory variant, with the GTM repackaged into a a more discrete conformal fin that has a flexible “foot” to help its magnet hunker it down onto the carbody. Other than the cabling leading inside, the main change would be to re-position the fractal antenna to take advanatge of the ground plane effect of the carbody.
The plug into the dash side of things inside would provide power. It would also allow the Bluetooth side of things to be moved inside the vehicle, with the signal to the transmitter passed by the coax to the fin-GTM atop the vehicle. Maybe Bluetooth through the roof isnt an issue, but this would provide a better signal focused on the vehicle that generates it than via the standard GTM on top.
I think this arrangement would be OK with the FCC, as it would retain a fixed antenna for the main GTM 1 W transmitter. The bigger problem would be getting over concerns about facilitating texting in vehicles, but the GTM should be treated no worse than cell phones are from a legal view, where it’s assumed the prohibition doesn’t apply to passengers or when the vehicle is parked. If it was easy to shft into relay mode when parked, adding thousands of temporarily stationary relays to the urban area mix could have interesting results.