Most likely the problem with the device is that it does not have enough receiver selectivity. Selectivity is a receiver jargon term that basically tells you how much your receiver can reject a signal in an ajacent band. This quantity is measured in dB and typically needs to be quite high. For...
I work for the FAA and we are trying to find an antenna that will reduce multipath from VHF and UHF signals. Currently we are testing some antenna's that are designed for receiving circularly polarized waves even though the transmissions from the aircraft are linearly polarized. These antennas...
