**LNA advantageously constructed based PSA4-5043+**
- LNA powered via Bias Tee (DC 3,3...5v) compatible with AirSpy/HackRF;
- LNA with RF filter (LPF, HPF or BPF) powered via Bias Tee (DC 3,3...5v) compatible with AirSpy/HackRF;
- RF filter (LPF, HPF or BPF) compatible with Mini-Circuits socket FV1206 (LFCN-x, HFCN-x, BFCN-x series), GP731 (RLP-x, RBP-x, RHP-x series) and GE0805C-3...
**Balun is an electrical device that converts between a balanced signal and an unbalanced signal**
- to match the dipole (impedance 73 Ohm) using a transformer 1:1.5 - 73/1.5 = 48.7 Ohm;
- to match the folder dipole (impedance 292 Ohm) using a transformer 1:1.5 - 292/1.5 = 194.7 Ohm and transformer 1:0.25 - 194.7*0.25 = 48.7 Ohm.
- for Cable pressure connector;
- for Cable soldering...