45-ft / 14m Tower and Yagi - First Attempt скачать в хорошем качестве

45-ft / 14m Tower and Yagi - First Attempt

This video details how we mounted the Yagi on the home-brow mast "thingy" and tried to pull it up by hand. Music at end is "Celestial Spheres - Ave Air" [found on Epidemic Sound]    • Home Brew 20m Monoband Yagi - Complete Bui...   - Yagi Project - Full Build Last time out, we had a successful first lift and have had it guyed and upright for a week before fitting the control cables for the rotator. Before that, we broke the Create Rotator. We fished out the Yaesu G-450 and did a successful "launch" with a 6:1 pulley. This is a 12m tower project for an HF Yagi / Quad etc. long story.. BUT the guys are dual-use as both a 40m 4-Square switchable antenna array - as well as the tower. ALl lines will be replaced with Dyneema after we've sorted it all out. There will be 4 vertical antennas coming off each guy point. Accuracy is mandatory for both the 4-square (impedance matching and gain etc) and you'll see shortly in another video why they need to be spot on because when we move to a non-stretch Dyneema rope, all 4-guys need to have same tension when the tower is lowered and raised. Further, the tower needs to be totally detuned from 40m so we have a fibreglass insulator to change the resonance to around 9MHz. We COULD add a further insulator above the rotator to move that to about 24MHz. More of that in later video. There will be a temporary yagi going up on the top of this tower which will give me time to develop the multi-band quad antenna. The G-450 rotator will eventually have be replaced. The vertical force specification on the G450 is 200Kg. I broke the Create RC5-1 which had double that. There are no sideways loads on the base of the tower so I only need to worry about vertical loads. The start of the construction is here:    • Building the Antenna Mast Foundations   "Part 1" is this one    • 40 ft / 12m Tower Project - Guys and Rotat...   The "disaster" video is here:    • Tower Project - Disaster - When It Goes Wrong   We covered the planning of this tower on a previous video:    • Cheap Tilt-Over Tower Ideas for Ham Radio ...   We also made a video about Quads - which is the target of this tower:    • Cubical Quad Antennas, Towers, Delta Loops...   And here is some information about 4-Square antennas which will surround the tower (tower will be de-tuned off 40m):    • How does a 4-Square Antenna Array Work?   Next video in this series is the full-blown QRO test. Finally, we will lay the radials down for the 4-square and connect up the control box. Enjoy. And Subscribe you b*ggers! Or even just give me a nice comment!!