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Antenna On Top Of Fuselage 747  
User currently offlineHAWK21M From India, joined Jan 2001, 26086 posts, RR: 51
Posted (7 years 3 months 2 weeks 11 hours ago) and read 356 times:


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Whats the rear most antenna on the top of the B747 fuselage for.
regds
HAWK.


Think of the brighter side!
5 replies: All unread, jump to last
 
User currently offlineDC-10Tech From United States, joined Jun 2001, 298 posts, RR: 2
Reply 1, posted (7 years 3 months 2 weeks 9 hours ago) and read 325 times:

That looks to me to be an ADF loop antenna. It could also be a TCAS or SATCOM antenna, but the shape doesn't look quite right to be either of those. Anybody with B747 experience know?



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User currently offlineDalmd88 From United States, joined Jul 2000, 1766 posts, RR: 7
Reply 2, posted (7 years 3 months 2 weeks 7 hours ago) and read 314 times:

Not TCAS. that one is relatively flat, usually mounted above the cockpit. Adf I think are usually on the bottom, not sure though. My guess is GPS.

User currently offlineMr Spaceman From Canada, joined Mar 2001, 2765 posts, RR: 14
Reply 3, posted (7 years 3 months 2 weeks 7 hours ago) and read 311 times:

Hi guys.

I agree with Dalmd88. I believe that it is a GPS antenna, although I'm not 100% sure.

Also, I think it's called a BOAT antenna...because of it's shape.

Chris  Smile




"Just a minute while I re-invent myself"
User currently offlineDC-10Tech From United States, joined Jun 2001, 298 posts, RR: 2
Reply 4, posted (7 years 3 months 2 weeks 7 hours ago) and read 309 times:

It looks like an ADF loop to me. I know the TCAS is usually above and below section 41, but I have seen some placed in the rear. Some models do stick up that far, but they are rectangular shape. I have never seen a GPS antenna that large either. I mentioned TCAS because I don't see an upper TCAS on this plane... somebody must know!


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User currently offlineDalmd88 From United States, joined Jul 2000, 1766 posts, RR: 7
Reply 5, posted (7 years 3 months 1 week 6 days 19 hours ago) and read 285 times:

Correct, it does look large for a GPS.
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