DIY Long Range WiFi Yagi Antenna



15 element long range WiFi yagi antenna for 802.11 b/g/n. How To. Good DIY project using simple tools and parts.

I apologize for the shaky video. I’m an retired person not a videographer. Besides it is hard to record with camera in one hand and cold beverage in the other.

Parts/tool list:
Approx 1 meter of 14 gauge (1.63mm dia) copper wire
Approx 300 mm of RG-8X coax
Approx 1 meter of 9.53 mm diameter (3/8 inch) fiberglass rod
Metric micrometer or ruler
Solder iron and electrical solder
Drill bit less than 1.63 mm in diameter
Hand drill or drill press

John Drew yagi calculator. Compatible on at least Windows XP Home edition

https://www.vk5dj.com/yagi.html

Martin Merserve folded dipole on-line calculator

https://www.k7mem.com/Electronic_Notebook/antenna

Coax balun on-line designer

https://n-lemma.com/calcs/dipole/balun.htm

Coax velocity factor chart

https://www.febo.com/reference/cable_data.html

Wire diameter chart

https://www.bulkwire.com/wiregauge.asp

Yagi calculator inputs:
Number of directors: 13
Cross-section of boom: 15 mm
Boom type: round
Construction of directors/reflector shape: round
Director/reflector mounting: non-metal boom
Diameter of element: 1.63 mm
Construction of dipole shape: round
Folder dipole mounting: fully insulated
Diameter of element: 1.63 mm

Yagi calculator outputs:
Reflector 59.4 mm long at boom position 30 mm
Radiator folded dipole 58.0 mm tip to tip
spaced 25 mm from reflector at boom position 55 mm

DIRECTORS
Dir___Length__Spaced__Boom position
(no.)__(mm)___(mm)___(mm)
1_____51.4____9.2____63.8
2_____50.7___22.1____85.9
3_____50.1___26.4___112.3
4_____49.5___30.7___142.9
5_____48.9___34.4___177.3
6_____48.4___36.8___214.1
7_____47.9___38.7___252.8
8_____47.5___40.5___293.3
9_____47.1___42.4___335.7
10____46.7___44.2___379.9
11____46.4___46.0___425.9
12____46.0___47.3___473.2
13____45.7___47.9___521.1

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Post time: Sep-12-2017
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