He turned to an RTL-based TV Dongle. Since the stock antenna was not cutting it, he decided to make one specifically for the 1090 MHz signal. His design is based on Coaxial Collinear Antenna for ...

[Tech Minds] reviews the GA-450 indoor active HF loop antenna and finds ... would be a nice portable option. You can build your own loop and loop-like antennas, of course. Some of them can be ...