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DIY 5$ Portable VHF Yagi Antenna for the 2 Meter Band (144-146 MHz) by F4HWK

Picture of DIY 5$ portable VHF Yagi antenna for the 2 meter band (144-146 MHz) by F4HWK

In this publication i explain how to build a very light weight, cheap, easy to build and deployable in 30 seconds portable VHF antenna for the 2 meter band. Here i present all steps to build this antenna. Measurement results for the S11 (or SWR) are also provided. The estimation of the gain for this antenna by an electromagnetic simulator is given on my blog :

Step 1: Materials and tools

Picture of Materials and tools

All you need for this antenna are 3 pcs of 4 mm diameter threaded rods, a PVC bar with a rectangular cross section (15 x 15 x 100 mm) and some screws. You also will need something to cut the rods and a drill.

swidkid5 months ago
It says 3 threaded rods. Step 2 seems to require four rods. Am I reading that correctly?
kavea (author)  swidkid5 months ago
Yes, I cut 3 rods of 1m to get four half elements
DamianN101 year ago

Is There Anyway To Add 70cm To This Yagi Antenna?

todop2 years ago
Im new and I plan to do a mixed lazy dual band antenna with threaded rods ,so i can just thread them through amd screw them. After that I might add elwments for 70cm. And make it higher gain eventually. For now Ill just mix yours and a 3 element design for 145 later Ill try to mix it with and
kavea (author)  todop2 years ago

Ok good idea. However it will not properly work if you mix different designs. I would take all dimensions from wb5cxc Yagi, it seems to have a nice performance.

Good luck and share the photo when you finished

todop2 years ago

Have you tried with 3 elements or more? I want to do something similar with 3 elements.

kavea (author)  todop2 years ago

It will work, not a problem, you will increase the gain if designed in a right way. But with more directors it becomes less and less portable.

tytower2 years ago

Take care following this fellow . See his other posts . I don't think he knows what he is doing and you may blow your transmitters up using these designs. Follow recommended ARRL yagi or dipole advice first