#Macdoppler Pc
Windows 7 PC (dedicated) running SDR-Console/Server, remote accessible via VNC Windows 7 PC (shared) running SDR-Console/Server, remote accessible via VNC
#Macdoppler software
Raspberry Pi 2 running custom Satcom software LMR-400, phasing cables, LMR-900 Pre-amp to cabinet LMR-400 phasing cables (M2 UHF-50) antenna to preamp, LMR-1200 50 ft preamp to station LMR-400, antenna to preamp, 5/8'' Heliax 50' from preamp to radio PolySat Intrepid System Board with AXSEM TransceiverįUNcube Dongle Pro+, RTL-2832, HackRF One Rohn JRM23810 non-penetrating roof mount 5' x 5' base, 10' tall In the table below are the default configurations for each station. The original design used the same Yaesu G-5500 rotor as the other two stations, however the increased weight of the quad-phased yagi array proved to be too massive for smooth pointing.
This is still in the experimentation phase, so Friis, as well as the other two stations, tend to swap equipment as needed. Friis, our third station, was built most recently in an attempt to maximize link margin and experiment with higher data rates using our new space-segment AXSEM transceiver on the ground-segment as well. These two stations would both be used the following year to successfully support the launch and operations of CP3 and CP4. Marconi was built next to communicate with CP2, since CP1 and CP2 were manifested for the same launch which unfortunately didn’t make it to orbit. Hertz was our first Earth Station, built mostly by Trent AE6HD to talk to CP1. Otherwise, the stations can be configured as needed to support different missions. The primary unchanging difference between the stations is the antenna configuration. Despite the changes the stations have undergone over the years, the basic principles are still the same. Having multiple stations also provides redundancy in case one needs to be taken offline for maintenance. Originally, since our first two CubeSats were launching at the same time, we decided to build two stations to operate them simultaneously. The Cal Poly Earth Stations have evolved over the years to adapt to different satellite configurations and needs.
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