Beacons have like other digital modes moved with the times, making use of the latest digital modulation techniques to improve detectability far beyond the human ear and CW. The name PI4- PharusIgnis4 comes from the ancient words for a beacon, lighthouse and fire and is a digital modulation that is compliant with the IARU Region 1 […]
Tag: Beacon
Receiving Non Directional Beacons (NDB)
NDB are low power beacons in the 250 to 550 KHz range. The beacons are usually situated at a landing strip/airfield / oil platform to aid navigation. They are non-directional so use a vertical omnidirectional antenna, and reasonably low power. The ERP is very low, as the physical size of the antenna restricts the efficiency […]