By Bob and Jann Koepke In part 1, Bob and Jann wrote about the USB SDR (Software Defined Radio), the LNA (Low Noise Amplifier), and various sateliite antennas. Now in part 2 (the final part), they describe the software, the QFH (Quadrafilar Helix antenna) they built, and how to put everything together.
By Bob and Jann Koepke When we think of ground stations for satellites, large antenna arrays and dishes immediately come to mind, along with a lot of expensive electronics. But you can receive transmissions from many satellites using very inexpensive equipment. An inexpensive RTL-SDR (Software Defined Radio) USB dongle and an omnidirectional antenna is a good start.