Marty, WT0Z, has a question on standing a antenna on a mast. He is wondering 20 ft metal fence post top rail mast that you use need self supporting or does it need guying for holding up the end of an end-fed? Watch to learn more. #Unun #guying #wind #mast #wiring #THHN #cables #salida #ponchasprings Subscribe: null. Edited and Videographed by Aidan Jakeman To learn more about me, visit: https://dcasler.com/home/ To support my channel financially: https://dcasler.com/support (offers several options) To pose an Ask Dave question: http://www.dcasler.com/ask-dave/ or http://www.ke0og.net/ask-dave/ Theme music is "Sour Tennessee Red," by John Deley and the 41 Players, courtesy YouTube Music Library. You can listen to the entire song here: https://www.youtube.com/watch?v=Vfc9sAQjJtc I use drawings from OpenClipArt.org, including the "walking man" Technician training videos, see http://www.ke0og.net/training/ General training videos, see http://www.ke0og.net/general/ Amateur Extra training videos, see http://www.ke0og.net/extra/ Thanks to my sweet wife, Loretta, KBØVWW, for both audio and video assistance! (Her website is www.aldea-art.com.) My primary website: http://www.dcasler.com/ The ham radio part of my website (direct link): http://www.ke0og.net/ My publishing website: http://www.mtsneffelspress.com/, where you can find my fantasy and science fiction books. My Amazon author page, which lists my print and Kindle books: http://www.amazon.com/-/e/B00471I0Q4. Twitter: @dcasler