What you need to get your airplane’s experimental airworthiness certificate.

Crashes while maneuvering at low altitude have a high mortality rate.

One of the final steps in getting your avionics suite to work is installation of some sort of antenna to capture various radio frequencies. Failing to choose the right antenna and install it properly can compromise the whole installation. Rather than focusing on the intricacies of antenna design, the author discusses the merits of internal versus external for particular equipment plus where to place them; by Stein Bruch

Most of the hard work is done, and its time for dope. First, pick the right spray outfit, next find a clean, well-ventilated work area and finish your surface preparation, and then you're ready to spray. By Ron Alexander.