Hello, in this video I show the manufacture of a compact, multiband HF vertical antenna that is perfect for portable operations - SOTA. Good DIY and attention to the direction of rotation of your drill... 😄 73 Gaël F4IHG

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List of elements necessary for the manufacture of the antenna: 1 fully threaded PVC pipe of 1.5 inches or "1/ 1/2": https://fr.aliexpress.com/item/329298... 2 x 1.5-inch or "1/1/2" female PVC pressure caps: https://www.manomano.fr/p/bouchon-fem... Marine grade stainless wire - Stainless steel-316 : https://fr.aliexpress.com/item/400079...
2 trunnion hoses 44 - 47 mm stainless steel 304: https://fr.aliexpress.com/item/100500... 2 hexagonal studs: https://fr.aliexpress.com/item/400051... Multi-strand flexible electric wire for sliding ring. From the heat shrink sheath, different sizes. 1 stainless steel M5 screw with 1 nut, 2 washers. 1 Full aluminium round tube, 11.5 mm in diameter. (1 m) 2 M10 stainless steel spacers of 30 mm. 2 Stainless steel screws for fixing the connector
1 socket female SO-239, with 2 holes: https://fr.aliexpress.com/item/100500... 1 butterfly nut. Flexible electrical wire for the connector. 1 telescopic antenna of 5.60 m: https://fr.aliexpress.com/item/400100... 1 telescopic antenna of 2.50 m: https://fr.aliexpress.com/item/100500... M10 screws: 30 mm M10 screws, stainless steel hexagonal nuts, 10.5 mm washers. Carnation pods of 10 mm and 8 mm.

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00:00 Introduction
00:50 Genesis
01:53 Brief presentation of the antenna
03:18 The necessary parts
09:23 Making the coil
23:30 The top cap
25:24 The sliding ring
26:41 The bottom cap
27:37 Test of the coil
28:23 The bottom cap with a connector
32:29 Manufacture of a counterweight system
36:13 Antenna test
36:57 Conclusion