Do the soldering in the center and attach feed wire.Add 45°.60° degree bend to last few cm.Mark the necessary length of wire for top arm.Building the antenna was rather straight forward: The actual conductor is 10mm² solid core wire (Erdungsleitung). I used a 40mm pipe for the center rod and 16mm cable duct for the “arms”. Click the little downwards pointing arrow in the top right corner above the map -> Configure : Select the satellites you’d like to track.Īfter doing a bit of reading decided to give building a Quadrifilar Helix (QFH) Antenna a try.Google Maps will probably be the easiest way to find out the proper coordinates. Edit -> Preferences -> General -> Ground Stations : Configure where you have your antenna.It will also predict time frames in which programmed groundstations are in line of site. GPREDICT will fetch satellite orbits from CelesTrak and visualizes them on a map. The easiest approach seems to be using GPREDICT which can be found on github.
![wxtoimg wxtoimg](https://leshamilton.co.uk/guide/wxmg02.jpg)
Reception of data is only possible, when the groundstation has line of sight with the satellite, as such you will want to do some tracking. Have a look at the “Enhancements” menu for all the different options. It also uses reference data from CelesTrak to create a map overlay over the satellite image itself. You can simply start it from the command line by running WXtoImg -G. Make sure to use WAV (Microsoft) signed 16-bit PCMįor decoding the received data I’ve been using WXtoImg.Set “Project Rate (Hz)” to 11025 (bottom left corner of the screen).As such open the file and perform the following steps: Getting the Image Preparationsīefore working with the recording, a bit of prep work using Audacity is necessary. When the satellite comes into range, simply hit the record button. Check the Files and Recordings section below for references.
![wxtoimg wxtoimg](http://www.weatherscience.net/superimage/superimage.jpg)