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Saudi 747-400's With 2 Satcom Antennas

Xms3200 From Sweden, joined Apr 2005, 101 posts, RR: 0
Posted (7 years 3 months 2 weeks 4 days 4 hours ago) and read 5446 times:

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I noticed that Saudi Arabian Airlines 747-468's have two satcom antenna's like the photos below show, all the other widebodies I have seen, have only one. Are there any other airlines that have a dual antenna system like Saudi Arabian, and also, does Saudi Arabian have a unique requirement for the dual system.

Thanks for all the replies.

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Photo © Stuart Lawson

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Photo © Tony Woof

9 replies: All unread, jump to last

Avioniker From United States of America, joined Dec 2001, 1109 posts, RR: 11
Reply 1, posted (7 years 3 months 2 weeks 3 days 10 hours ago) and read 5347 times:

It all comes down to how much you can afford for what your needs are...
There are a few other applications with multiple antenna installations.

One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533

Tod From Denmark, joined Aug 2004, 1682 posts, RR: 3
Reply 2, posted (7 years 3 months 2 weeks 3 days 9 hours ago) and read 5336 times:

Quoting Avioniker (Reply 1):
There are a few other applications with multiple antenna installations.

Some 777 have dual (LH and RH) satcom installations.

Tod

777 From Italy, joined Sep 2005, 497 posts, RR: 0
Reply 3, posted (7 years 3 months 2 weeks 2 days 17 hours ago) and read 5223 times:

Hi,
I knew that Saudi Arabian was investing on the Internet on Board technology on its long haul fleet.
This technology requires, in most cases, a specific satellite antenna.

So this could be the reason why you see two antennas...

Ciao!

AirbusA346 From United Kingdom, joined Dec 2004, 7434 posts, RR: 2
Reply 4, posted (7 years 3 months 2 weeks 2 days 15 hours ago) and read 5207 times:

Quoting Tod (Reply 2):
LH

LH don't have 777's.

Tom.

Tom Walker '086' First Officer of a A318/A319 for Air Lambert - Hours Flown: 17 hour 05 minutes (last updated 24/12/05).

SCXmechanic From United States of America, joined Dec 1999, 534 posts, RR: 1
Reply 5, posted (7 years 3 months 2 weeks 2 days 15 hours ago) and read 5202 times:

He means LH (LEFT HAND) and RH (RIGHT HAND) Satcom's. Not the 2 letter code for an airline...

HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 6, posted (7 years 3 months 2 weeks 2 days 14 hours ago) and read 5188 times:

LINK
regds
MEL

Think of the brighter side!

NA From Germany, joined Dec 1999, 9616 posts, RR: 10
Reply 7, posted (7 years 3 months 2 days 13 hours ago) and read 4956 times:

When the 3 Saudi 744s were delivered in 98/99 (already with the double satcom on the back) there was no such thing as onboard internet. I also wondered why they have this feature (I´m pretty sure only one or two of the Middle East rulers private 744s have that double bubbly too). Onboard-internet pioneer Lufthansa have a bigger bubble installed now on some of their 744s).

AeroWeanie From United States of America, joined Dec 2004, 1601 posts, RR: 52
Reply 8, posted (7 years 3 months 1 day 23 hours ago) and read 4879 times:

The dome that HAWK21M shows is a Marconi satcom dome. The Saudi 747s seem to have two of this dome. Its probably to double the number of possible telephone connections.

The Connexion By Boeing dome is much bigger. Here are some examples on Lufthansa A340s and 747s. On the A340 I think the forward dome is a Marconi, while the aft is definitely a CBB dome:

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Photo © Max Teuber

Here is a closeup of the Marconi dome:

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Photo © Keith Wahamaki

This one has a Marconi dome behind the CBB dome:

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NA From Germany, joined Dec 1999, 9616 posts, RR: 10
Reply 9, posted (7 years 2 months 4 weeks 5 hours ago) and read 4716 times:

LH got their 744s in basically two batches: D-ABVA upto -VN and D-ABTA up to -TH from 1989-92 and D-ABVO up to VZ and D-ABTK/L in the late 90s up to 2002. The second batch got the Marconi satcom. None of the original batch was upgraded. Thats why you can still tell these aircraft apart.

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