what needs to be activated ,beside having app running to make the point to sky feature work ?
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pointing to sky to ident a plane
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UAL35 Returns to SFO after experiencing mechanical problems
Happened to be watching this flight. Have seen no news on this yet.
Boeing 787 N27908 SFO to KIX returns to gate Sunday 2/7/16.
http://www.flightradar24.com/data/ai...27908/#8c0f762
Boeing 787 N27908 SFO to KIX returns to gate Sunday 2/7/16.
http://www.flightradar24.com/data/ai...27908/#8c0f762
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Help needed MH2
I wonder if anybody here can help me.
Could anybody please confirm the arrival time of flight MH2 into LHR on the morning of 4th January and the reason for the delay. I have tried on numerous occasions to contact Malaysian Airlines customer services but to no avail.
Thank you
Dennis
Could anybody please confirm the arrival time of flight MH2 into LHR on the morning of 4th January and the reason for the delay. I have tried on numerous occasions to contact Malaysian Airlines customer services but to no avail.
Thank you
Dennis
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A 3/4 λ Collinear Groundplane Antenna
A 3/4 λ Collinear Groundplane Antenna
Source: Antenna Theory by Stutzman.
Abridged by: abcd567.
In many instances it is desirable to obtain more gain from a monopole than that provided by a 1/4 wavelength groundplane.
To obtain more gain, a Collinear 3/4 λ or 7/8 λ groundplane monopole may be used as Fig.1 illustrates. The 1/4 λ stub provides the necessary phase shift to place the current on the upper and lower portions of the monopole in phase.
In practice, the 1/4 λ phasing stub is usually replaced by a phasing coil. Both the stub and its coil substitute provide the necessary phase shift to place the current on the upper and lower portions of the monopole in phase. This phasing coil may be roughly thought of as the wire in the stub coiled into a coil.
The purpose of the loading coil at the base of the 3/4 λ monopole is to improve the VSWR. Fig.3a shows the input impedance with the base coil in place. Note that a zero reactance occurs at 860 MHz. Fig.3b shows the VSWR referenced to 50 Ohms. The VSWR curve could be made more symmetrical by slightly increasing the inductance of the coil at the base.
The far-field pattern is shown in Fig. 2c. Note the favourable strong broadside radiation of the 3/4 λ Collinear monopole (i.e. the whip with phasing stub & loading coil).
For comparison, Fig. 3 shows the far-field pattern of the 3/4 λ simple monopole (i.e. a 3/4 λ whip without stub & without coil). This pattern is generally highly undesireable.
The gain of the 3/4 λ groundplane monopole with phasing stub & loading coil is at least 3dB greater than the 1/4 λ groundplane monopole.
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Source: Antenna Theory by Stutzman.
Abridged by: abcd567.
In many instances it is desirable to obtain more gain from a monopole than that provided by a 1/4 wavelength groundplane.
To obtain more gain, a Collinear 3/4 λ or 7/8 λ groundplane monopole may be used as Fig.1 illustrates. The 1/4 λ stub provides the necessary phase shift to place the current on the upper and lower portions of the monopole in phase.
In practice, the 1/4 λ phasing stub is usually replaced by a phasing coil. Both the stub and its coil substitute provide the necessary phase shift to place the current on the upper and lower portions of the monopole in phase. This phasing coil may be roughly thought of as the wire in the stub coiled into a coil.
The purpose of the loading coil at the base of the 3/4 λ monopole is to improve the VSWR. Fig.3a shows the input impedance with the base coil in place. Note that a zero reactance occurs at 860 MHz. Fig.3b shows the VSWR referenced to 50 Ohms. The VSWR curve could be made more symmetrical by slightly increasing the inductance of the coil at the base.
The far-field pattern is shown in Fig. 2c. Note the favourable strong broadside radiation of the 3/4 λ Collinear monopole (i.e. the whip with phasing stub & loading coil).
For comparison, Fig. 3 shows the far-field pattern of the 3/4 λ simple monopole (i.e. a 3/4 λ whip without stub & without coil). This pattern is generally highly undesireable.
The gain of the 3/4 λ groundplane monopole with phasing stub & loading coil is at least 3dB greater than the 1/4 λ groundplane monopole.
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Unexpectedly Complex Holding Patterns
I was just watching flights that were coming in to land at Londons Heathrow airport today, February 10, 2016 add about 1600 hrs. Greenwich Mean Time, when I noticed something that I have never encountered in all my informal studies of aviation.
Even without the benefit of having an air traffic control scanner, and living close enough to Heathrow to be able to enjoy listening in on ATC conversations with inbound aircraft, the perfectly choreographed aerial ballet performed by multiple aircraft traversing that highly congested airspace around Heathrow Airport really is a thing of beauty to behold on my computer screen, thanks to Flight Radar 24.
Looking just now at several aircraft that were on descent to Heathrow runway 27, I was really intrigued by the holding patterns performed by quite a few of those aircraft, with many of those very intricate maneuvers being carried out over the town of Romford a few miles due north east of Heathrow.
Rather than a circular holding pattern or a rectangular holding pattern that I am accustomed to seeing in the tutorials that are included with Microsoft Flight Simulator 2004, for example, what I saw on the screen of these real-time flights went far beyond those simple circular or racetrack shapes that I expected to see for holding patterns.
Specifically, as the aircraft made their banking turns in the holding pattern, there were periodic S shaped deviations from the circle, to the left and right, at regular intervals along the entire course of the holding pattern. There is definitely an artistic beauty that is imparted on those standard holding patterns by those S shaped deviations from the circular course, despite their obvious utility in maintaining aircraft separation.
With absolutely zero real-world flying experience under my belt, I guess my question to any real-world pilots who visit this forum would be whether it is correct to assume that all those evenly spaced deviations from a standard holding pattern are being performed by the flight crew in response to instructions issued rapid-fire by air traffic control even as the normal holding pattern is being followed.
Thanks to products by desktop flight simulator enhancements by PMDG and Level D for Boeing birds, I have a non-qualified laymans familiarity with the programmed inclusion of holding patterns into flight paths that are defined by entries into the Flight Management Computer, and it is because I do not recall encountering any reference to these highly complex holding patterns, that I find them so intriguing and mysterious.
Unfortunately I havent yet figured out how to post screenshots from the Flight Radar 24 website pages in this discussion forum, which is why I have attempted to make my verbal descriptions of these fascinating flight paths as detailed as I can here. To better understand the phenomenon that Im trying sperately to convey here in words, right now would be a good time to look at traffic coming into Heathrow runway 27, and take a closer look at some of the holding patterns being performed by inbound passenger jets, particularly over the town of Romford.
I sure would be grateful for any explanations that can be offered as to why and how these highly unusual holding patterns are carried out, obviously on a regular basis. Thank you very much in advance for any thoughts that can be shared on the subject.
Even without the benefit of having an air traffic control scanner, and living close enough to Heathrow to be able to enjoy listening in on ATC conversations with inbound aircraft, the perfectly choreographed aerial ballet performed by multiple aircraft traversing that highly congested airspace around Heathrow Airport really is a thing of beauty to behold on my computer screen, thanks to Flight Radar 24.
Looking just now at several aircraft that were on descent to Heathrow runway 27, I was really intrigued by the holding patterns performed by quite a few of those aircraft, with many of those very intricate maneuvers being carried out over the town of Romford a few miles due north east of Heathrow.
Rather than a circular holding pattern or a rectangular holding pattern that I am accustomed to seeing in the tutorials that are included with Microsoft Flight Simulator 2004, for example, what I saw on the screen of these real-time flights went far beyond those simple circular or racetrack shapes that I expected to see for holding patterns.
Specifically, as the aircraft made their banking turns in the holding pattern, there were periodic S shaped deviations from the circle, to the left and right, at regular intervals along the entire course of the holding pattern. There is definitely an artistic beauty that is imparted on those standard holding patterns by those S shaped deviations from the circular course, despite their obvious utility in maintaining aircraft separation.
With absolutely zero real-world flying experience under my belt, I guess my question to any real-world pilots who visit this forum would be whether it is correct to assume that all those evenly spaced deviations from a standard holding pattern are being performed by the flight crew in response to instructions issued rapid-fire by air traffic control even as the normal holding pattern is being followed.
Thanks to products by desktop flight simulator enhancements by PMDG and Level D for Boeing birds, I have a non-qualified laymans familiarity with the programmed inclusion of holding patterns into flight paths that are defined by entries into the Flight Management Computer, and it is because I do not recall encountering any reference to these highly complex holding patterns, that I find them so intriguing and mysterious.
Unfortunately I havent yet figured out how to post screenshots from the Flight Radar 24 website pages in this discussion forum, which is why I have attempted to make my verbal descriptions of these fascinating flight paths as detailed as I can here. To better understand the phenomenon that Im trying sperately to convey here in words, right now would be a good time to look at traffic coming into Heathrow runway 27, and take a closer look at some of the holding patterns being performed by inbound passenger jets, particularly over the town of Romford.
I sure would be grateful for any explanations that can be offered as to why and how these highly unusual holding patterns are carried out, obviously on a regular basis. Thank you very much in advance for any thoughts that can be shared on the subject.
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29 Kts at15.000 ft?
Hi Everyone,
Just saw something really strange last night near Eindhoven airport (Netherlands). Check the screenshot attached...speaks for itself.
29 Kts at 14,425ft? and check out the confused flight pattern too. Anyone can give an explanation for this? Software bug or has the transponder been stolen by a bird? :p
Greetings!
BaronScreenshot_2016-02-09-23-14-22.jpg
Just saw something really strange last night near Eindhoven airport (Netherlands). Check the screenshot attached...speaks for itself.
29 Kts at 14,425ft? and check out the confused flight pattern too. Anyone can give an explanation for this? Software bug or has the transponder been stolen by a bird? :p
Greetings!
BaronScreenshot_2016-02-09-23-14-22.jpg
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Indirect spam from FlightRadar24
Most of the time I create and use a unique email address (no public email provider and no webmail) for different websites, like flightradar24.com to know exactly who is responsible for sending me spam directly or indirectly. In the last 3 days I got 3 spam emails with malware to this email address. I don't say that you sent them, but you are the only one (except me) who knows this email address, which means that you are leaking email addresses of your users somehow. Please pay more attention to how you handle our email addresses! Thanks.
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What to do when moving my feeder to a new location
Hello
I'm wondering what I need to do when I have re-located my feeder, we have moved from southern France to northern Denmark (Sealand) - do I need to do anything? (it's my own Pi2 + dvb-t stick running the fr24 sw).
regards
Henrik
I'm wondering what I need to do when I have re-located my feeder, we have moved from southern France to northern Denmark (Sealand) - do I need to do anything? (it's my own Pi2 + dvb-t stick running the fr24 sw).
regards
Henrik
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522 Error
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Raspberry Pi with LCD TouchScreen
Hi everyone, i'm from Brazil, and just started feeding (one week today) with my Pi! Looking on the internet i saw on youtube a video of guy that put a TouchScreen LCD shield in the raspberry, then he turned the power on and the screen first showed the boot and after the flights that the antennas was receiving! And in the description, he says that he was feeding to FR24! So, now my question, how he did this with the flights in the LCD? I don't know if i'm allowed to put the link of the video here because this is my first post! But, the name of the video is "ADB-S / DVB-T/ RASPBERRY PI/ Flight Radar Tracker/ 2014", someone know how to do this? Thanks a lot!
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Finding out what flights were over a specific place at a specific time
I was needing to know about flights over Oklahoma City at specific time on a specific day. I am not looking for a specific flight number or plane type, just all the aircraft and flight paths over OKC at 3:30 pm February 9th. It's not obvious how to do that with this program, it may not even be possible. I feel pretty sure there is a record somewhere out there. If anyone can help me out with this I would oh so very much appreciate it.
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Is anyone Feeding with stand alone hardware using cell inet and solar panels/battery?
Remote locations require innovative solutions on a shoe string budget. Has anyone done this and what did you learn?
John
F-RPVD1
Dumaguete
John
F-RPVD1
Dumaguete
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fr24feed compiled for arm-el
Can we get a version of fr24feed compiled for armel? (or the source to compile it myself?)
I have dump1090+PiAware on an old arm11 NAS box running debian, and would like to add fr24feed too. But I only see armhf packages available. thx
I have dump1090+PiAware on an old arm11 NAS box running debian, and would like to add fr24feed too. But I only see armhf packages available. thx
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What do you think this is (55K + altitude)?
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WY202 flight from Mumbai (BOM) to Muscat (MCT)
I spotted on 2016-02-14, that flight WY202 (operated by Oman Air) from Mumbai (BOM) to Muscat (MCT) was diverted to Al Ain (AAN).
http://www.flightradar24.com/data/ai...4o-bk/#8d01a16
Do you know where to find the reason of diversion? Can you maybe share more detail?
Thank you for your help,
Marek
A4O-BK diverted flight WY202.jpg
http://www.flightradar24.com/data/ai...4o-bk/#8d01a16
Do you know where to find the reason of diversion? Can you maybe share more detail?
Thank you for your help,
Marek
A4O-BK diverted flight WY202.jpg
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No aircrafts, approach FDH, Ubuntu 14.04, DVB-T?
Using Flightradar24 for a while as a user I am trying to contribute to the community but it looks like I am not succesful.
Problem: I cannot see that my installation is tracking aircrafts although airplanes are literally flying over my house approaching FDH.
I have a Ubuntu desktop 14.04 running 24/7 to monitor cameras around my house. As the machine is not very busy and the other hardware was already available I installed
the linux DEB package, attached the DVB-T stick and a DVB-T antenna, sitting on the outside of a window. Cable length is around 3m. Antenna is working if attached to a TV.
What could be my problem?
Accessing the machine through Port 8754 I get the following output:
The status gives the following information:
Problem: I cannot see that my installation is tracking aircrafts although airplanes are literally flying over my house approaching FDH.
I have a Ubuntu desktop 14.04 running 24/7 to monitor cameras around my house. As the machine is not very busy and the other hardware was already available I installed
the linux DEB package, attached the DVB-T stick and a DVB-T antenna, sitting on the outside of a window. Cable length is around 3m. Antenna is working if attached to a TV.
What could be my problem?
Accessing the machine through Port 8754 I get the following output:
Code:
Flightradar24 Feeder/Decoder
Linux/generic/i686/1.0.13-2
Updated: 11:29:35 GMT+0100
FR24 Link: Connected via UDP
FR24 Radar Code: T-EDNY19
Aircraft Tracked (ModeS & ADS-B): 0
Aircraft Uploaded: N/A
Receiver: dvbt, Connected
Actions:
Settings
Restart software
Terminate software
Show tracked aircraft list
Show status variables (*)
* - Debug only, will be removed laterCode:
ac_map_size="2048"
build_arch="i686"
build_flavour="generic"
build_os="Linux"
build_revision="master-5ad42ab.git"
build_timetamp="20150519-1345"
build_version="1.0.13-2"
cfg_baudrate=""
cfg_bs="no"
cfg_host=""
cfg_mpx=""
cfg_path="/usr/lib/fr24/dump1090"
cfg_raw="no"
cfg_receiver="dvbt"
cfg_windowmode="0"
d11_map_size="0"
feed_alias="T-EDNY19"
feed_current_mode="UDP"
feed_current_server="83.140.21.66"
feed_last_attempt_time="1455613054"
feed_last_config_attempt="1455613054"
feed_last_config_info=""
feed_last_config_result="success"
feed_last_connected_time="1455613074"
feed_status="connected"
feed_status_message=""
fr24key="*** removed-privacy ***"
last_json_utc="1455618732"
last_rx_connect_status="OK"
last_rx_connect_time="1455618641"
last_rx_connect_time_s="2016-02-16 10:30:41"
last_rx_global_timeout="1455618635"
msg_ring_full="0"
msg_ring_length="0"
num_global_timeouts="9"
num_messages="0"
num_resyncs="0"
rx_connected="1"
shutdown="no"
time_update_utc="1455618789"
time_update_utc_s="2016-02-16 10:33:09"
timing_is_valid="1"
timing_last_drift="+0.0004"
timing_last_offset="+2.0631"
timing_last_result="success"
timing_source="NTP"
timing_time_last_attempt="1455618481"
timing_time_last_success="1455618481"
timing_time_since_last_success="603"↧
FR24 3D
Any idea when Flight Radar 3D will be up and running.
Previous blog says early 2016. It's now the middle of February.
Flystuart
Previous blog says early 2016. It's now the middle of February.
Flystuart
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Turkish Airlines Airbus A319 Istanbul Kherson Full Flight
Hi everybody! Last week I flew from London to Istanbul then to Kherson Ukraine on Turkish Airlines. Great experience! This airline provide one of the best inflight service. Kherson is located in south of Ukraine next to Dnepr river delta . The flight lasted 1hour and 5 min. So please enjoy watching this cabin video in HD which was filmed by GoPro Hero Black 3 camera
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Output statistics question
Hi.
Just two questions about the output shown on page localhost:8754/index of fr24feed (see attachment).
1. what is the "Aircraft Uploaded" number? why does it increase and decrease through time?
2. what is the "Aircraft Tracked" number? is it the present number of aircraft being tracked in real time?
Many thanks for your advice.
Regards,
CrVMo
Just two questions about the output shown on page localhost:8754/index of fr24feed (see attachment).
1. what is the "Aircraft Uploaded" number? why does it increase and decrease through time?
2. what is the "Aircraft Tracked" number? is it the present number of aircraft being tracked in real time?
Many thanks for your advice.
Regards,
CrVMo
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Yet Another Feed for KPTK?
I notice that there are already several seemingly good feeds for the KPTK area. Two certainly 'better' than mine based on max & avg ranges.
Should I even bother feeding?
Should I even bother feeding?
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