Been tinkering with my other small dish while I collect data from my SatNOGS station……
The dish is an old unbranded one we got for free, it seems to be a simple offset feed. It seems to be nothing special or of note.
The GPS antenna is one I pulled out of an old broken GPS system. It is just the patch antenna, it does not have a low pass filter or amplifier on it at all. (This is not the one, but probably pretty close; https://www.amazon.com/gp/offer-listing/B00R3PFMRG ).
The LNA is one I got off Amazon in the USA. It’s probably not that great, but seems to help a lot, looking forward to getting the Sawbird IO ( https://www.amazon.com/gp/product/B07K1NMC23 ) today and will make a note of any difference in the signal strength.
It is powered over the line by a bias T, so we use the SmaTee ( https://www.amazon.com/gp/product/B06Y1D7P48 ) to provide the 5v it requires.
I did not want that 5v to get into the AirspyMini, so I got one of these splitters;https://www.amazon.com/gp/product/B003H2HNQWIf you take a look at the product image, you can see that only one leg passes DC, the other leg is blocked.
So that is how I have one dish, one feed and two data feeds.
Works great. We are getting hundreds of Marine SafetyNET messages and thousands of ACARS messages a day.
