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#1
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Iridium...can you receive it ?
Hi, i'd like to invite those interested in Iridium
to join our discussion-group where we currently look at the possibilties of receiving and decoding Iridium signals. As you may have noticed the Iridium satphone system has currently gained a lot of attention thanks to it's use in Iraq and in the Katrina area. Here's a few technical details: Handset TX-power is an average 0,6 Watts RX sensitivity is -118 dBM Frequency-band 1616-1626,5 MHz (L-Band) Duplex is Time Division Duplex TDD (RX/TX same freq) Data-rate 2400 Bd (V42b compression) Modulation is QPSK Acess/Multiplex is TDMA/FDMA Coverage: 100% Worldwide (sat in sight) Calls currently barred to: N.Korea,N.SriLanka Use forbidden in: Cuba,Iran,Libya,Sudan,Angola Services: Voice,Data,Paging,Voice PTT,Group calls Mobile Sat link=encryption NO (?) Sat Groundstation link-encryption YES (?) Sat Sat link-encryption: UNKNOWM (probably NO) Standard end-to-end encryption: NO Add-on encryption units available: YES To take part in this discussion sign up at: http://groups.yahoo.com/group/gsm-scanner membership is free,the group is moderated. this group is mainly talking about GSM and Cellphone interception,encryption and security but we will now extend our interests to satphones. Greetings contranl (moderator Yahoo group GSM-scanners) |
#2
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DOD 625 encryption.
Couldn't break it with a bomb. On Tue, 13 Sep 2005 03:15:42 +0200, "Bla" wrote: Hi, i'd like to invite those interested in Iridium to join our discussion-group where we currently look at the possibilties of receiving and decoding Iridium signals. As you may have noticed the Iridium satphone system has currently gained a lot of attention thanks to it's use in Iraq and in the Katrina area. Here's a few technical details: Handset TX-power is an average 0,6 Watts RX sensitivity is -118 dBM Frequency-band 1616-1626,5 MHz (L-Band) Duplex is Time Division Duplex TDD (RX/TX same freq) Data-rate 2400 Bd (V42b compression) Modulation is QPSK Acess/Multiplex is TDMA/FDMA Coverage: 100% Worldwide (sat in sight) Calls currently barred to: N.Korea,N.SriLanka Use forbidden in: Cuba,Iran,Libya,Sudan,Angola Services: Voice,Data,Paging,Voice PTT,Group calls Mobile Sat link=encryption NO (?) Sat Groundstation link-encryption YES (?) Sat Sat link-encryption: UNKNOWM (probably NO) Standard end-to-end encryption: NO Add-on encryption units available: YES To take part in this discussion sign up at: http://groups.yahoo.com/group/gsm-scanner membership is free,the group is moderated. this group is mainly talking about GSM and Cellphone interception,encryption and security but we will now extend our interests to satphones. Greetings contranl (moderator Yahoo group GSM-scanners) |
#3
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Hi Bob...that's only true for some DOD users (not even all)
then their are other users (commercial,private,rescue,ships,oil...etc) and then there's the paging-service wich is not encrypted.. signalling is not encrypted at all ! contranl |
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