Firstly, I am experimenting with my units and the antennas available. No need for any “why would you do that” replies. I have 3 antennas available up a mast. 2 x DPD adsb omnis and a Jetvision 1090 yagi. All amps to be used are ceramic uptronics. As you will see in the diagrams, I am running odroid N2’s and XU4’s and Airspys. The crucial part of this is a SMA t piece. At the moment I have 2 units mounted on the mast in their cosy little enclosure, a N2 and dual antenna Radarcape, one of the DPD’s and yagi into the Radarcape and the other DPD omni onto the N2. I am planning to move my XU4 to the enclosure. But what I am going to try is running 2 antennas, ommi and yagi, into the XU4, utilising the t piece. the radarcape will go onto another antenna system. The question is the placement of the amps, as diagrammed. I will be utilising the gain feature of the Airspy, to make adjustments as required, to compensate.
Second set up:
Pending the results, I would transfer the best setup onto the N2. Thoughts please