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4 Element Vhf Yagi Antenna Satnam Singh VU2COR Yagi-Uda antenna commonly known as Yagi antenna, is a directional antenna consisting multiple parallel elements in a line. The driven element or the radiator is a half wave dipole which is connected to the receiver or transmitter with a transmission line. Parasitic element are placed near the driven element with some space in between them. In this article, we are going to make a simple 4 element yagi antenna for vhf 2m amateur radio band(144-146 Mhz) which can also be used for 70cm band. Design Dimensions Element Position (mm) Length(mm) Reflector 0 1016 Radiator 260 980 Director 1 470 924 Director 2 985 890 *Element length for 6mm pipe only* Material needed 1.  Aluminum pipe(6mm) 2. Wooden boom (120cm*5cm*3cm) 3. 5 screws to hold the elements 4. 25mm Pvc pipe(5cm) 5. RG58u coaxial ...

Antenna For Easy Satellites  - II Dual Band Moxon Yagi Antenna By:- VU2COR Pic. 1 Design of this antenna     This antenna works very well on both the bands. As the feedpoint is given to only one part of the antenna, so there is no need to use a duplexer or a seperete radio for receiving and transmitting the signals. Making this antenna is quite simple and low cost and you can  make this in an hour or two. I got this design from another blogger and ham LY3LP.     Material needed 1" sq. wooden dowel or 1/2" pvc pipe. 6 mm aluminum pipe ( I have used) OR 3 to 4 mm hard aluminum rod. Coaxial Cable like RG58 and Connector as per your need. Some kind of insulators that can be used as seperator  Tools like Drill machine with drill bit according to the diameter of the metal you are using as the elements in the antenna. Tape measurement and a marker Handsaw for cutting pipe and rod      Pic.2 UHF Yagi elements ins...