This is designed to hold a Nooelec Nano 3 SDR module together with an MCX to SMA adapter and a small 70cms antenna.
The main reason for this is so I can use it with my Android phone and it makes sure the push-in MCX connector is held firmly in place protecting the MCX port on the Nano 3 from being accidentally bent.
The USB A to C cable is also held within the case to give support.
As I printed it the MCX 8mm hexagon is deliberately a tight fit and some slight fettling with a small needle file may be required for the MCX-SMA adapter to fit.
The author marked this model as their own original creation.