As briefly as possible… My goal is to have a UAV on my boat that is connected to a power tether and provides a bird’s eye view. Basically just fly straight up and follow the movement of the boat. Maybe 100-150 feet height max.

I’m aware of tethered systems out there and they range in the $20k to $50k price range… I don’t need this that badly lol.

Ideally, I would be able to use the boat’s alternator as the initial source of power, even if I have to upgrade to a higher output alternator.

My initial thoughts are some kind of converter to boost the 12-14V DC way up at the base and then convert it back at the drone itself. This is where I am stuck… Trying to get some help from people who have a bit more expertise in this area.

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You need to engage a decent electronics engineer, it's trivial to step up the he voltage onboard the ship to a few hundred volts, and then reduce it onboard the UAV to whatever it needs.
Take tethered Solo kit as inspiration.

This is what I've been having trouble locating: something to step up the voltage to a few hundred volts. Do you know of a particular device?

Andre K. said:

You need to engage a decent electronics engineer, it's trivial to step up the he voltage onboard the ship to a few hundred volts, and then reduce it onboard the UAV to whatever it needs.
Take tethered Solo kit as inspiration.

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