I dont kown why this antenna does not recognize automatically by modem firmware so i had to manually select External antenna from modem setup.Because i did not ground the outer wire of co-axial cable to the boom.Most of the signals around my home could be reflected signals.
That mus be the reason this antenna showing lesser speed than biquad antenna. I just made this antenna to show you guy how to make a basic Yagi antenna. They are popular for amateur radios, TVs and internet modems. There are several applications on internet developed to design yagi antennas. Im using Yagi calculator by John Drew aka Vk5dj Supplies: Aluminium tube (square or round) Iron or aluminium rod Proper 50ohm co-axial cable SMA male connector ( This depends on type of your modems antenna connector Electrical wire connector Glue Some basic tools. Add Tip Ask Question Comment Download Step 1: Short Video I Made From This Build Here is a short video i done fro this antenna build. ![]() Yagi Antenna Design Program Manual You CanDownload from here Install and open the software Add Tip Ask Question Comment Download Step 3: Software Manual You can get a brief introduction to the software and yagi antenna from here. It also helps to understand parameters you need to chnage in application. Add Tip Ask Question Comment Download Step 4: Entering Values Go to task and Click design Yagi. You must need to find the lowest frequency of your isp transmit to provide internet to your modem. You you can find the uplink and downlink frequency for specific frequency from wikipedia. Reason to choose lowest frequancy is antenna getting bigger when frequency goes low. You also need to find the velocity factor if your co-axial cable not shown in the menu. If your cable not shown there go to this following wikipedia page and you can find the velocity factor. You can change how many directors going to include in your antenna, More directors mean more gain and high directionality. I only had a 2.5mm rods for all element so i entered that value in director and dipole section. Yagi Antenna Design Program Full Details OfLTE Bands Velocity Factor Add Tip Ask Question Comment Download Step 5: Constructions Details In this window contains full details of construction. ![]() Add Tip Ask Question Comment Download Step 6: Construction I used welding rod for directors, reflector and driven element. I think there is not much to describe in words than watching some pictures. Add Tip Ask Question Comment Download Step 7: Speed Test I know this is not much of a speed when considering biquad antenna and i explained the possible cause for that in introduction.
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