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Old 7th Sep 2004, 11:43
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plane tracking

Hi There guys,

Can a plane still be tracked if it's radar or other tracking instruments are switched off
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Old 7th Sep 2004, 12:03
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Not sure what you mean by "radar or other tracking instruments"?? An aeroplane can be seen on primary radar irrespective of what equipment may be carried on board (excluding, of course, stealth aircraft!). For example, light aircraft with no transponders - and some with no radio - can be easily seen on radar..
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Old 7th Sep 2004, 12:12
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is someone trying to do some smuggling and doesnt want to be watched?
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Old 7th Sep 2004, 12:20
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And at very low level the Police radar does a thing on your car.
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Old 7th Sep 2004, 12:33
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Thanks guys.

That's what i meant RADAR and transponders.

So they can still be seen
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Old 7th Sep 2004, 13:55
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<<So they can still be seen>>

Yes... even gliders and even birds!
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Old 7th Sep 2004, 13:59
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...and ships, trains and trucks aswell, if in line-of-sight of the radar head
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Old 7th Sep 2004, 14:01
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and nice fluffy clouds
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Old 7th Sep 2004, 14:17
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For a while in the USA primary radar coverage (unassisted no transponders required) was considering being dropped or reduced.

9/11 changed all that and the primary radar coverage is being beefed up and suplemented with AWACS.

Cheers
Wino
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Old 7th Sep 2004, 15:41
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<and nice fluffy clouds>

No - well, not on modern ATC radars!
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Old 8th Sep 2004, 09:57
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what about gliders? do they give a primary return?
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Old 8th Sep 2004, 10:01
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They do indeed 380.

I have tracked many out to over 100 miles from the radar head, older plywood gliders and the newer GRP jobs.
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Old 8th Sep 2004, 15:29
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<<...and ships, trains and trucks as well, if in line-of-sight of the radar head>>

Only "maybe". Ships would be far to slow - ATC radars have circuitry which eliminates very slow moving echoes. Ships, trains, trucks..... I've only seen such things on Surface Movement Radar where they are supposed to show.
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Old 8th Sep 2004, 15:46
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thx henry

i'll tell all my glider friends to be more careful around CTA boundaries
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Old 8th Sep 2004, 18:51
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Can a plane still be tracked if it's radar or other tracking instruments are switched off
If they couldn't we'd be speaking German!
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Old 8th Sep 2004, 22:27
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Only the other day I was passing traffic information to a little Cessna "slow moving prime target in your 1 o'clock........" The pilot happily informed me they were a flock of geese. I don't think he would have been as happy if he hadn't seen them and flown into them.
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