mgrimes1907's blog View Details
Posted by mgrimes1907 | Feb 27, 2020 @ 06:55 PM | 3,310 Views
Ground station and 900 mhz relays for telemetry and antenna trackers.


I had no idea that so many were going to view this so I will explain a little more.

My ground setup is a Pelican take down case with two (2) 19 inch monitors mounted in the lid. I did not drill or cut any holes in this case, I wanted it to maintain it's weather proof ability. The main part of the case holds a Graupner MC-28 radio, DragonLink transmitter. The Dragonlink transmitter is piggy backed with a 2.4 Ghz repeater from Graupner radio and a 900 Mhz radio modem for wireless telemetry to a laptop running Mission Planner, which is also housed in the main body of the case. Also in the main body of the case is a 5.8 Ghz video receiver with an HDMI out for one monitor. The other monitor is connected to the computer.

There are two antenna trackers on tripods in my setup, one has a 9 element 1.2 Ghz yagi to receive video. The 1.2 Ghz video is relayed to a 5.8 Ghz video transmitter on the tripod for wireless video to the ground station. Also on the video antenna tripod is a 900 Mhz radio, which is setup up on a Multi-Point network to receive data for the antenna tracker.

The second tripod holds the 433 Mhz yagi, DragonLink transmitter, 2.4 Ghz receiver, a 900 Mhz radio modem on a Peer to Peer network for wireless telemetry, and a 900 Mhz radio modem to receive data for the antenna tracker through the Mutli-Point network.

The 900 Mhz radio modems are controlled by Mission Planner via a couple of Maestro Mini 6 channel servo controllers piggy backed onto the 900 Mhz radio modems along with a PDB with a 5 volt regulator.

My goal was to have everything wireless and as quick and easy to set up as I could.

I hope this explains a little more than the short description I had posted earlier.

Please feel free to comment or make any suggestions.