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Thread: PHILIPPINE RADAR FORUM

  1. #11
    Purser AircraftSpotterPH's Avatar
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    Quote Originally Posted by paradiselost View Post
    Here is a commented list of the Philippine Feeders status.

    I'll start in the south (Mindanao) and move North to Baguio.

    F-RPWD1 Davao Online regularly
    F-RPMB1 General Santos Online regularly
    F-RPMZ1 Zamboanga Online regularly
    F-RPMG1 OR F-RPMZ2 Not determined yet since either airport is possible. Receiver is in-transit and will pop-up any day.
    F-RPML1 Cagayan de Oro Hasn't been online in quite a while. Missing in action.
    F-RPVT1 Tagbilaran, Bohol Host is working in Singapore and has left the family to keep the receiver online with varying results. Offline more than On. The host has indicated he will return this month and make some station improvements.
    F-RPVO1 Southern Leyte Online regularly with good receiver range.
    F-RPVM1 Cebu City/Lapu-Lapu Online regularly with good ground coverage of CEB.
    F-RPVD1 Dumaguete/Sibulan Negros Oriental Online regularly
    F-RPVB1 Bacolod/Silay Negros Occidental Missing in action.
    F-RPVI1 Ilo-Ilo Online regularly with good receiver range.
    F-RPLP1 Legazpi, Bicol region Online with good receiver range.
    F-RPLL1 Manila, Luzon Online very reliable on building with generator backup.
    F-RPLL2 Cavite, Luzon Online very good complimentary receiver range with F-RPLL1
    F-RPLL3 Manila Not online yet beyond initial verification.
    F-RPUB1 Lingayan Gulf location not Baguio, online good receiver range.

    A receiver was approved for Roxas on the north coast of Panay Island but couldn't find reference to it.

    MLAT is working in some areas of the Visayas but additional receivers in Cotobata and Cagayan de Oro are needed to complement F-RPMB1 in General Santos and F-RPWD1 in Davao. Palawan is very desirable for a receiver but so far FR24 hasn't been able to find a host. As for finding control tower locations for receivers in the provinces, they generally turn out the lights and the internet after the last flight of the day. If talking to officials stress the safety net FR24 provides and with playback features could turn a disaster from a recovery to a rescue. Minutes and hours over water can make a difference.

    Naturally, some we talk to look at our service and view it with suspicion either for cultural or national defense reasons. Don't be discouraged.

    John
    F-RPVD1
    Where did you Get the information About the Feeders In the Philippines?
    Ice
    F-RPLL3

  2. #12
    First officer paradiselost's Avatar
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    Quote Originally Posted by AircraftSpotterPH View Post
    Where did you Get the information About the Feeders In the Philippines?
    Gathering Feeder information is like writing a book. It takes research, perseverance and trying to track down memories of seeing the information somewhere.

    New feeders, are wowed by the FR24 features and get the free receiver not knowing what it takes to be a reliable partner so instead of reading everything provided ask questions which sometimes leads to ambiguous answers further confusing them.

    In any endeavor strive for excellence instead of letting things lead to mediocrity......Get technical knowledge and use the tools provided and see where you are lacking....then fix it.

    I hope there will be more receivers in Manila for MLAT
    Really, since we live in a nation of calamities a receiver for Clark Field would make better sense. Clark Field is on a different electrical grid so is possibly immune from a Manila metro blackout during a calamity. Also small packages like DHL's arrive via Clark and are then trucked to Manila for distribution to the provinces. For MLAT Clark's receiver range would be complementary to the three Manila stations and also the Lingayan Gulf station enabling MLAT for Luzon.

    John
    F-RPVD1
    Last edited by paradiselost; 2014-12-02 at 07:39.

  3. #13
    Purser AircraftSpotterPH's Avatar
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    Yes Clark is also a good location
    Ice
    F-RPLL3

  4. #14
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    Quote Originally Posted by AircraftSpotterPH View Post
    Yes Clark is also a good location
    There must be an ADS-B receiver about 6 to 8 Nautical miles from RPLL/MNL Ninoy Aquino International Airport to show MLAT Ground Traffic

  5. #15
    First officer paradiselost's Avatar
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    Quote Originally Posted by Tiger670 View Post
    There must be an ADS-B receiver about 6 to 8 Nautical miles from RPLL/MNL Ninoy Aquino International Airport to show MLAT Ground Traffic
    Tiger670 you must be confused. Look at the FR24 main page and click on About/How it Works at the top right of the page.

    You will find this definition of MLAT.

    MLAT
    In some regions with coverage from several FR24-receivers we also calculate positions of non-ADS-B equipped aircraft with the help of Multilateration (MLAT), by using a method known as Time Difference of Arrival (TDOA). By measuring the difference in time to receive the signal from aircraft with an older ModeS-transponder, it's possible to calculate the position of these aircraft. Four FR24-receivers or more, receiving signals from the same aircraft, are needed to make MLAT work. That means that MLAT coverage can only be achieved above about 5,000-10,000 feet as the probability that signal can be received by four or more receivers increases with increased altitude.

    Most parts of Europe are today covered with MLAT above about 5,000-10,000 feet. There is also some MLAT coverage in North America, Mexico, Australia and Brazil. More areas will get MLAT coverage during 2014 and 2015.
    To show ground traffic, there is a place to enable it in the settings.

    Since ADS-B is line of sight, RPLL2 being on the west end of the runway may be shielded from aircraft turning left on the taxi way going to the domestic terminal but RPLL1 may have an unobstructed view being in a different receiver location so on the map the radar notation will change from RPLL2 to RPLL1. It is true that the curvature of the earth impacts viewing ground movements if the observing receiver is beyond 6-8 miles.

    Tiger670 thanks for the observation.

    John
    F-RPVD1

  6. #16
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    Quote Originally Posted by paradiselost View Post
    Tiger670 you must be confused. Look at the FR24 main page and click on About/How it Works at the top right of the page.

    You will find this definition of MLAT.





    To show ground traffic, there is a place to enable it in the settings.

    Since ADS-B is line of sight, RPLL2 being on the west end of the runway may be shielded from aircraft turning left on the taxi way going to the domestic terminal but RPLL1 may have an unobstructed view being in a different receiver location so on the map the radar notation will change from RPLL2 to RPLL1. It is true that the curvature of the earth impacts viewing ground movements if the observing receiver is beyond 6-8 miles.

    Tiger670 thanks for the observation.

    John
    F-RPVD1
    But can it show MLAT aircraft landing on Runway 06?

  7. #17
    First officer paradiselost's Avatar
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    Quote Originally Posted by Tiger670 View Post
    But can it show MLAT aircraft landing on Runway 06?
    No by definition it can't and you will not see end to end flights but just some appearances on the map when tracked by 4 or more receivers. Until Luzon is awarded more receivers you will not see any Luzon MLAT traffic on the map....just certain areas in the Visayas does the 4+ tracking receivers make it possible.

    Presently, F-RPLL1 and 2 overlap with F-RPVI1 and F-RPLP1 so it can be possible for the appearance of a non-ADS-B aircraft over Mindoro east and west.
    Last edited by paradiselost; 2014-12-02 at 23:22.

  8. #18
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    Quote Originally Posted by paradiselost View Post
    No by definition it can't and you will not see end to end flights but just some appearances on the map when tracked by 4 or more receivers. Until Luzon is awarded more receivers you will not see any Luzon MLAT traffic on the map....just certain areas in the Visayas does the 4+ tracking receivers make it possible.

    Presently, F-RPLL1 and 2 overlap with F-RPVI1 and F-RPLP1 so it can be possible for the appearance of a non-ADS-B aircraft over Mindoro east and west.
    Thanks for the information.

  9. #19
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    I Just saw F-RPVB1 Bacolod today, while the plane is around Ozamiz City and Panay Island. its Active.

    Yes, i have good coverage with my ADS-B. From Marindugue, Southern Part of Mindoro, Naga City, Virac. West part is is between Cuyo Island and Damaran Island In Palawan, South I can Cover near Zamboanga City, Near General Santos City, Samal Island , East is Samar, Leyte, Dinagat Island, Pacific Ocean. and the Whole Visayas Area is Covered.

    So far Palawan and Jolo is Our Blind Spot here in Philippines
    Last edited by Kailrusha; 2014-12-03 at 09:56.
    RPVO1

  10. #20
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    I hope that There will be FR24 Receiver Host In

    Surigao Airport(ICAO:RPMS)
    Bancasi Airport(ICAO:RPME)
    Laguindingan Airport(ICAO:RPMY)
    Daniel Z. Romualdez Airport(ICAO:RPVA)

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