Will it work? Yagi with no Reflector - Antenna Design/Build/Test

Fellow YouTuber, 2E0UKH told me about a 2 element dual-band 2m/70cm beam antenna he built. I ran with the idea and made my own, out of arrow shafts, with an additional element. The results? Watch and find out.

2E0UKH YouTube Channel:    / ukgadget2  

MMANA GAL file: https://drive.google.com/file/d/1IQ8l...

Antenna Photos - SWR and Patterns: https://photos.app.goo.gl/GAKAw9uykCk...

Element Lengths and Positions:
- Driven element
- Position: 0"
- Element Length: 20.17" (ea.)
- Director #1
- Position: 3.78"
- Element Length: 19.05" (ea)
- Director #2
- Position: 13.26"
- Element Length: 18.36" (ea)

SUPPLIES:
Arrow Shafts: https://amzn.to/3oDgpuM
- Note: you can likely find them a little cheaper on AliExpress.com
Threaded Inserts: https://amzn.to/37UQhWm
Arrow Connector: https://amzn.to/3oFrTOA
- Note: you can also just use a threaded rod and a jamb nut or some LocTite to secure it

HARDWARE:
Nylon Threaded Rod: https://www.mcmaster.com/nav/enter.as...
Aluminum Threaded Rod: https://www.mcmaster.com/nav/enter.as...
... more durable alternative
Stainless Steel Threaded Rod: https://www.mcmaster.com/nav/enter.as...
Nylon Spacers: https://www.mcmaster.com/nav/enter.as...
Aluminum Hex Nut: https://www.mcmaster.com/nav/enter.as...

Key Build Tips:
- Use a drill press. Hand-drilling will not result in straight enough holes.
- Remove the anodized coating from the inside of the arrow shaft before crimping in the inserts. The coating is non-conductive.
- Apply dielectric grease to the outer part of the threaded insert to prevent corrosion.
- If you over-crimp the inserts, you'll have to re-drill the clearance hole portion and re-tap the threads.
- Be careful installing threaded aluminum rods, as the threads can be easily damaged.

Have fun building, and good luck!

K6ARK Portable Radio shirts for sale (thanks Jason!): https://grapevineamateurradio.com/pro...

#MNHR