tulikomento
Supreme Leader
Laitehan on simppeli vehje, kuvassa ei ihan uusinta huutoa oleva tranponderi. Numeronäyttöön ruuvataan lennonjohdon antama nelinumeroinen koodi ja siviilitutkassakin koneen tarkka paikka että korkeus näkyy. Yleisilmailukoneilla lennetään ilman lentosuunnitelmaa koodilla 2000.
- 7000 - Transponderi koodi, joka yksilöi VFR-lennoille;
- 7500 - Transponderi koodi , kone kaapattu (lentäjä kääntää koodin 7500, lennonjohto tietää koneen olevan kaapattu)
- 7600 - Transponderi koodi, joka yksilöi, että radio ei ole kunnossa
- 7700 - Transponderi koodi valittu hätätilanteessa Generic aluksella;
- 2000 - valitun transponderin koodin ilma ei ohjeistettu valita mitään koodia, esimerkiksi valvomattomassa ilmatilassa;
- 0000 - Koodi on varattu perustuvat kansainvälisiin sopimuksiin, yleisiin tarkoituksiin.
Täältä löytyy lisää noista venäläisten systeemeistä ja käytännöistä.
http://www.jamestown.org/programs/e...Pid]=27&tx_ttnews[tt_news]=45600#.V4ZkY49OIjY
The problem is, Russian military jets do not have and never had any transponders, so they have nothing to switch on. Only some transport and passenger jets belonging to the defense ministry have installed transponders; and their crews know some English to speak with civilian air traffic controllers, in order to be qualified to fly more financially lucrative commercial routes. Russian combat air crews, on the other hand, speak almost no English and are not trained to use transponders or parley with civilian air traffic controllers.
Instead of civilian transponders, military jets have friend-or-foe identification devices (IFF). Modern US IFF devices may have cryptographically secured transponder capabilities to disclose their identity, flight info and GPS position, but the digitally coded IFF “Patrol,” commonly used by Russia and developed in the late 1970s, does not have that feature. US jets could possibly “switch on” transponders, but their Russian counterparts cannot. It would require years and billions of dollars to develop and install Russian-made next-generation IFF devices that could also act as transponders; moreover, the VKS command would be unhappy to see their jets flying with any foreigner able to peep in on their activities. Thus, the transponder confidence-building proposal does not seem to make much sense. Nevertheless, a high-ranking US official, who asked not to reveal his name, since he is not authorized to make public statements, told this author that the Pentagon has no intention to “switch on transponders on recon[naissance] missions over the Baltic Sea in sight of Russia” .
