No callsign på Flightradar24

[LN-KOG]

Jeg har sittet og fulgt noen flighter med dattera til noen venner som flyr hjem med Ethiopian i dag. Mora ble nærmest hysterisk da hun ikke fant flighten, men det er utrolig mange no callsign i dag. Bare rundt Cape Town så jeg 7-8 stykker. Det virker tilfeldig for alle selskapene hadde mange andre flighter med callsign.

Er det som har et forslag til årsak?

[LN-MOW]

Fra 'How it works':

In some regions with coverage from several FR24-receivers we also calculate positions of non-ADS-B equipped aircraft with the help of Multilateration (MLAT), by using a method known as Time Difference of Arrival (TDOA). By measuring the the time it takes to receive the signal from aircraft with an older ModeS-transponder, it's possible to calculate the position of these aircraft. Four FR24-receivers or more, receiving signals from the same aircraft, are needed to make MLAT work. MLAT coverage can only be achieved above about 3,000-10,000 feet as the probability that four or more receivers can receive the transponder signal increases with increased altitude.

Most parts of Europe and North America are today covered with MLAT above about 3,000-10,000 feet. There is also some MLAT coverage in Mexico, Brazil, South Africa, India, China, Japan, Taiwan, Thailand, Malaysia, Indonesia, Australia and New Zealand. More areas will get MLAT coverage as we continue to add new receivers to our network.

For mange av disse ser radaren kun fly-id og avreisestasjon (hvis den plukkes opp ved avgang). Viktig å huske at FR24 kun er private stasjoner med de begrensninger dette gir.

https://www.flightradar24.com/how-it-works

[LN-KOG]

Jeg er klar over det, men det bruker å være så meget bedre i Sør-Afrika

[LN-KOG]

Glemte helt å si takk, LN-MOW