$50 Skytraq RTK receiver has anyone used it?

Im just looking at them more for experimentation, if it was something commercial I wouldn’t hesitate to get a F9P but i dont mind taking a gamble on it, it might turn out to be a reasonable option for budget builds even if it might take some additional shelding measures to get a stable lock.

there are really only 2 rtk receivers for reasonable money and thats the skytraq and the f9p so it would be nice to at least find out if the skytraq is viable for vehicles.