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Search: Posts Made By: iakobos
Showing results 1 to 35 of 35
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Forum: African Aviation
13th Feb 2012, 07:08
Replies: 9
Views: 2,869
Posted By iakobos

Gulfstream GIV, possibly N2SA of Stanford...

Gulfstream GIV, possibly N2SA of Stanford Aviation LLC.
Forum: Rumours & News
10th Jul 2011, 19:49
Replies: 51
Views: 27,946
Posted By iakobos

Stavros Papaioannou is indeed Cypriot.

Stavros Papaioannou is indeed Cypriot.
Forum: Tech Log
28th Apr 2011, 09:56
Replies: 2,546
Views: 938,030
Posted By iakobos

@JD-EE I fail to see a loop. It looks...

@JD-EE

I fail to see a loop.

It looks very much like a small (semi) vertical monopole planted on the virtual ground (the aircraft).
At about 9 feet its resonance is around 26 MHz, (radiation)...
Forum: Tech Log
4th Apr 2011, 13:32
Replies: 3,893
Views: 1,544,276
Posted By iakobos

According to France 24 citing a source close to...

According to France 24 citing a source close to the investigation...
the debris field is situated West from LKP and not far from it.
Forum: Tech Log
16th Jan 2011, 22:04
Replies: 8
Views: 3,747
Posted By iakobos

By the way, it's called the SKIP ZONE.

By the way, it's called the SKIP ZONE.
Forum: Tech Log
4th Dec 2010, 19:03
Replies: 16
Views: 17,250
Posted By iakobos

- you ARE having a laugh, are you not? By...

- you ARE having a laugh, are you not?

By jove, I should have mentioned that UFOs follow of course different procedures.
Forum: Tech Log
4th Dec 2010, 11:02
Replies: 16
Views: 17,250
Posted By iakobos

Mayday, Pan and Sécurité are all derived from...

Mayday, Pan and Sécurité are all derived from nautical signals, visual or morse coded.

TTT SECURITE (warning)
XXX PAN PAN (urgency) (as used by the QF over Singapore recently)
SOS...
Forum: Rumours & News
21st Oct 2010, 07:30
Replies: 74
Views: 36,230
Posted By iakobos

In short: Contrary to an earlier assertion...

In short:
Contrary to an earlier assertion mentioning fuel starvation, the cause of the crash is said here to be panic in the cabin just prior to landing, after a (living) crocodile freed himself...
Forum: Tech Log
28th Jun 2010, 16:52
Replies: 3,893
Views: 1,544,276
Posted By iakobos

JD, from experience it takes anything between 15...

JD, from experience it takes anything between 15 and well over 60 seconds to (re)synchronize on an Inmarsat, most cases falling in the 20-40" braket.
Forum: Tech Log
27th Jun 2010, 10:38
Replies: 3,893
Views: 1,544,276
Posted By iakobos

"A heavy enough bank left wing down would take...

"A heavy enough bank left wing down would take the satellite out of the ACARS antenna beam perhaps past the antenna aiming algorithm's attempts to correct it."

The a/c is within the beams of two...
Forum: African Aviation
26th Jun 2010, 18:06
Replies: 69
Views: 29,361
Posted By iakobos

Not Democratic Republic of Congo (Kinshasa) but...

Not Democratic Republic of Congo (Kinshasa) but Republic of the Congo (Brazzaville)
Forum: Tech Log
7th Jan 2010, 18:53
Replies: 3,893
Views: 1,544,276
Posted By iakobos

Just the trace of an idea... CVR/FDR, all...

Just the trace of an idea...

CVR/FDR, all well until they are located, recovered and in readable condition.
What we are looking essentially at is the location of the frame.

Relying on HF or...
Forum: Tech Log
4th Jan 2010, 22:34
Replies: 3,893
Views: 1,544,276
Posted By iakobos

Satellite aerials are not omni-directional ...

Satellite aerials are not omni-directional
Stricto senso this is incorrect.
Eg. Iridium, Orbcomm, Globalstar, Thuraya are satellites or constellations of satellites that are accessible by portable...
Forum: Rumours & News
25th Aug 2009, 11:18
Replies: 107
Views: 69,489
Posted By iakobos

Cellphone & VHF

Almost right...max energy (and capture) is targeted at the clients, antennas being even, often, tilted towards the ground.
However, if one looks at a cell base station from a "certain" distance, it...
Forum: Tech Log
5th Jul 2009, 11:10
Replies: 4,593
Views: 3,293,745
Posted By iakobos

ttsce - really brief - for Inmarsat satellite...

ttsce - really brief - for Inmarsat satellite frequencies the answer is "some" but not dramatically. The antenna tracking test for Inmarsat-M antennas was suited for a ship in very rough weather that...
Forum: Tech Log
22nd Jun 2009, 19:23
Replies: 4,593
Views: 3,293,745
Posted By iakobos

Inmarsat Aero-L used by ACARS makes use of a...

Inmarsat Aero-L used by ACARS makes use of a solid state antenna.
The "radiation" diagram of the antenna is omnidirectional (azimuth) and hemispheric (elevation).
Two satellites cover the area, one...
Forum: Tech Log
13th Jun 2009, 12:11
Replies: 4,593
Views: 3,293,745
Posted By iakobos

Stuff like BGAN only does around 400kb/s. Even...

Stuff like BGAN only does around 400kb/s. Even modern platforms such as "SPACEWAY" only get up to 30Mbps.

Believe me, it's going to be a looooong time before you see 400Mbps coming from a...
Forum: Tech Log
13th Jun 2009, 11:49
Replies: 4,593
Views: 3,293,745
Posted By iakobos

RWA - The ACARs messages go via any of one 4...

RWA - The ACARs messages go via any of one 4 (soon to be 7) operation Inmarsat sateliites (plus backups). The SATCOMs is continously tracking the satellite on which the A/C has logged-on.

Inmarsat...
Forum: African Aviation
25th Oct 2007, 14:56
Replies: 2
Views: 789
Posted By iakobos

The set up is Hewa Bora Airlines 51% / Brussels...

The set up is Hewa Bora Airlines 51% / Brussels Airlines 49%
Said to be 4 BAe146 for domestic and indeed 2 B737-800 for intra-regional flights.
Ops scheduled to start in December.
Forum: African Aviation
22nd Sep 2006, 18:03
Replies: 6
Views: 994
Posted By iakobos

For "cheap" onboard satphone installations, >...

For "cheap" onboard satphone installations,
> Iridium: check SatTalk II
> Thuraya: check AirSat

For technical (re. fast moving object) and coverage reasons, Iridium is the preferred system.
Forum: African Aviation
13th Apr 2006, 19:29
Replies: 40
Views: 5,199
Posted By iakobos

Geia Su Champ (in 2004 only), You presume...

Geia Su Champ (in 2004 only),
You presume wrongly, I belong to the OO- community, though, when not in FIH, I do live near one of your beaches (previously Kastella-Piraeus, now Perea-Thess), and even...
Forum: African Aviation
12th Apr 2006, 18:03
Replies: 40
Views: 5,199
Posted By iakobos

First Elections on July 9 (first round for Prez &...

First Elections on July 9 (first round for Prez & legislatives)
Second (provincials & Prez secound round -if needed-) probably in October
Third (municipals) in February '07
Fourth (locals) around...
Forum: Military Aviation
19th Sep 2005, 11:55
Replies: 3
Views: 2,027
Posted By iakobos

Hi, The father of the unfortunate pilot,...

Hi,

The father of the unfortunate pilot, Commandant Fabrice Massaux (1 Sqdn/ 2nd Wing, Florennes AB) is looking for anyone whom would be in possession of pictures or any documents pertaining to...
Forum: Tech Log
1st Sep 2005, 18:10
Replies: 19
Views: 1,985
Posted By iakobos

Smokey, We will of course not come to a...

Smokey,

We will of course not come to a clear conclusion in this specific case, but just for the sake of it, let me think...

(1) the suspected pax used a blackberry

(2) only the channel...
Forum: Tech Log
31st Aug 2005, 19:47
Replies: 31
Hf
Views: 5,014
Posted By iakobos

Every good rule has an exception, hence the good...

Every good rule has an exception, hence the good rule.
Aerial systems (much more poetic than antenna isn't it ?) have their exception.

TW are not used for transmission.
Rhombics (terminated or...
Forum: Tech Log
31st Aug 2005, 19:23
Replies: 19
Views: 1,985
Posted By iakobos

Quite unlikely, that kind of equipment is...

Quite unlikely, that kind of equipment is reserved for Santa Claus and only to be used during mid-winter season.
There is an exception to this though, it is allowed for pub-to-pub celebrations in...
Forum: Tech Log
31st Aug 2005, 11:06
Replies: 31
Hf
Views: 5,014
Posted By iakobos

Radeng, This is an enhanced aperiodic dummy...

Radeng,

This is an enhanced aperiodic dummy load, not an antenna. ;)
With enough power injection it works, just make sure it's properly cooled.
Forum: Tech Log
30th Aug 2005, 15:03
Replies: 19
Views: 1,985
Posted By iakobos

It is somewhere between extremely improbable and...

It is somewhere between extremely improbable and absolutely impossible.

Even if we assume that a "leak" could pop up somehow at 133.8 MHz, we have to do with 3V (?) circuits using digital...
Forum: Tech Log
29th Aug 2005, 21:56
Replies: 31
Hf
Views: 5,014
Posted By iakobos

Right, In true Western Union language then: ...

Right,

In true Western Union language then:
23 73 30
Forum: Tech Log
29th Aug 2005, 21:46
Replies: 19
Views: 1,985
Posted By iakobos

You're welcome I hope I helped save the ass...

You're welcome

I hope I helped save the ass of some future Blackberry users at cruise level.
Those crews can be rough at times... ;)

Disclaimer
My posts are in no way promoting or justifying...
Forum: Tech Log
29th Aug 2005, 18:24
Replies: 31
Hf
Views: 5,014
Posted By iakobos

BEagle, Your post exposes two shocking...

BEagle,

Your post exposes two shocking facts.
One you were a pirate, two you were an English pirate. ;)

73's
Forum: Tech Log
29th Aug 2005, 16:56
Replies: 31
Hf
Views: 5,014
Posted By iakobos

Cool Radeng, You did not correct me, you just...

Radeng,

You did not correct me, you just added a point intended for the non-experts. ;)

An antenna is always resonant somewhere, the problem is, nowhere else.
Therefore the TU or ATU that...
Forum: Tech Log
29th Aug 2005, 16:40
Replies: 19
Views: 1,985
Posted By iakobos

Less younger Smokey, Both the distance/time...

Less younger Smokey,

Both the distance/time length (close to 200nm), route and altitude of the a/c, and intelligibility of the reception make cellular as the cause of "interference" a no-go.

At...
Forum: Tech Log
29th Aug 2005, 01:05
Replies: 31
Hf
Views: 5,014
Posted By iakobos

Small correction just for the sake of it... ...

Small correction just for the sake of it...

The target for tweaking is for NO noise at all.
At that point (aka frequency at which the antenna resonates), the noise bridge will indicate precisely...
Forum: Tech Log
29th Aug 2005, 00:53
Replies: 19
Views: 1,985
Posted By iakobos

I guess you are well aware that your COM decodes...

I guess you are well aware that your COM decodes analog AM only and that a cellphone sends digital signals....in a frequency band at least 7 times higher and not even as a single stream on one...
Showing results 1 to 35 of 35


 
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