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Thread: Aussie Feeders

  1. #301
    Flight attendant
    Join Date
    Jun 2012
    Location
    Cairns Queensland Australia
    Posts
    95
    YBCS2 sends a big hello to the Innisfail and Mission Beach feeders... nice to have some extra back up over the far north.

  2. #302
    Captain
    Join Date
    Apr 2013
    Location
    SE Qld, Australia
    Posts
    510
    Interesting feeder that I've not seen before appeared today: T-YBBN26. Interesting in that it only seems to catch planes way out to sea, like between 50km and 300km off the coast roughly between Noosa in Qld and Yamba in NSW although it hung onto one inbound ANZ plane until about 20km off Stradbroke Island. I hesitate to declare this as a new feeder since so many of them have popped up around Brisbane in recent times that are in fact established feeders making a new appearance.

  3. #303
    Flight attendant
    Join Date
    Apr 2013
    Location
    Brisbane, Australia
    Posts
    90
    Quote Originally Posted by airnrail View Post
    Interesting feeder that I've not seen before appeared today: T-YBBN26. Interesting in that it only seems to catch planes way out to sea, like between 50km and 300km off the coast roughly between Noosa in Qld and Yamba in NSW although it hung onto one inbound ANZ plane until about 20km off Stradbroke Island. I hesitate to declare this as a new feeder since so many of them have popped up around Brisbane in recent times that are in fact established feeders making a new appearance.
    Yes, Looking at it now picking up the EK A380. Must have an antenna pointing out to sea?
    Regards
    Geoff

  4. #304
    Flight attendant LDSP's Avatar
    Join Date
    Nov 2010
    Location
    Split,Croatia
    Posts
    53
    And interesting that other feeders from YBBN3-YBBN26 are not "visible" due to "overlapping".
    Last edited by LDSP; 2014-01-30 at 08:12.

  5. #305
    Captain
    Join Date
    Jan 2012
    Location
    Dudley area, UK
    Posts
    1,410
    Quote Originally Posted by POR911 View Post
    Yes, Looking at it now picking up the EK A380. Must have an antenna pointing out to sea?
    Regards
    Geoff
    I wouldn't be so sure
    - I can get 400km using the tiny magmount whip antenna that came with the dongle ... if I place it inside the window of the office where I work ... on the 8th floor (Seeing planes near Amsterdam from Birmingham City Centre, UK)


    [Receiver 820 button dongle + Raspberry pi]

  6. #306
    Passenger
    Join Date
    Nov 2013
    Location
    Innisfail, QLD, Australia
    Posts
    12
    How do you find out who is hearing what?
    I'd like to know if my setup is working ok.
    And where do you find out your designation if you're a feeder?

    Many thanks guy's.

    Jeff.
    -
    Jeff Cochrane - VK4XA
    East Innisfail, QLD, Australia
    F-YDKI1

  7. #307
    Passenger
    Join Date
    Nov 2013
    Location
    Innisfail, QLD, Australia
    Posts
    12
    Don't worry
    I've found my details.
    Going to make some improvements on my system here soon, the coverage isn't quite as good as I had hoped for.
    -
    Jeff Cochrane - VK4XA
    East Innisfail, QLD, Australia
    F-YDKI1

  8. #308
    Flight attendant
    Join Date
    Sep 2013
    Location
    Nth Queensland
    Posts
    96
    Quote Originally Posted by VK4XA View Post
    Don't worry
    I've found my details.
    Going to make some improvements on my system here soon, the coverage isn't quite as good as I had hoped for.

    Jeff,

    If your call sign (VK4XA) is an indication you have an amateur radio licence, then you'll be aware that radio wave propagation is sometime still a 'dark science' more so with the higher frequencies. You can in fact have an antennae which is 'too' good and amplify the signal too much.
    Spending a lot of loot will not help location, so if you have your own 'tower' assuming you are an radio amateur, then pick a point on the tower and mount your FR or SBS supplied antennae on a 'ground plane' and you will solve most issues.

    For my installation I use a 12" whip supplied with SBS-1 even though I now use an SBS-3. I have about 30' feet of ordinary coaxial cable, (not low loss). I have a 1090 Mhz filter near the antennae and a regular every day TV antennae amplifier installed close to the SBS-3.

    Weather affects all radio waves as you know, so a crappy day will give crappy results even though we are working with UHF frequencies. I'm located near a hill at Mission Beach, almost at the base, so I'm shielded out to the West and range is generally 60 miles max for aircraft above 24,000 feet. To the north I can receive aircraft 100 miles north of Cairns, when they are above 37,000' to the South I can do aircraft up to 200 miles above 37,000 feet with Townsville traffic showing above 5800 feet. Probably via TCASA re-transmit. Out to the EAST is better still with 240 miles quite the norm regardless of weather.

    I assume you know what signal aircraft are transmitting?

    These units pick up Mode "S" ADS-B using Extended Squitter frequencies (1090) Mhz, and the SBS will also pick up USA type signals based upon UAT frequencies. Some places have re-transmit.

    By and large only IFR aircraft (heavy metal airliners) have ADS-B at present, although more light aircraft IFR are being retrofitted on a daily basis. As from 14th Feb all new imports into Australia must be ADS-B compliant (IFR).

    If your looking for local Innisfail traffic, tough luck! the parachute planes generally have only Mode C Transponders but the PAC750 aircraft does have a Mode S which SBS will interrogate and display an altitude in the data but no actual position is displayed. It will be years to come before all aircraft including VFR types are required to have ADS-B installed.

    Enjoy!

    Cheers,

    YDKI1

  9. #309
    Quote Originally Posted by VK4XA View Post
    How do you find out who is hearing what?
    I'd like to know if my setup is working ok.
    And where do you find out your designation if you're a feeder?
    Jeff.
    If you have an FR24 supplied receiver you should have received an email which answers all these questions and inviting you to contact Support@FR24.com if you need further help or advice.

  10. #310
    Passenger
    Join Date
    Nov 2013
    Location
    Innisfail, QLD, Australia
    Posts
    12
    Quote Originally Posted by FR24support View Post
    If you have an FR24 supplied receiver you should have received an email which answers all these questions and inviting you to contact Support@FR24.com if you need further help or advice.
    Many thanks, the email has been found and it's all sorted now.
    The email got cleaned off of my local machine but fortunately I use GMail and I was able to check out the details on there.

    It seems as though my receiver is hearing reliably to about 315Km to the southwest through to the northwest.
    (The antenna is mounted on the east side of the mast)
    At this time however I think that it should be hearing better than that, particularly when aircraft are at 45000+ feet to the south of me at very close to Mach 1 like an aircraft was today, my system didn't hear it at all, it was tracked by Townsville and Cairns though almost to New Guinea.

    I do have to shorten the antenna feed line and that will be done in the next day or two.
    The loss of 10 metres of the originally supplied RG58 size cable should do the system the world of good.
    (It is currently being used as a patch lead between the feed-through connector in my shack wall and the receiver, a distance of 1 Metre!)
    The rest of the feed line is high quality LMR400 with silver plated N connectors and the antenna is 12 metres off of the ground.

    One question though, the connector on the back of the receiver, is that a reverse SMA or a normal SMA connector?

    Many thanks for your assistance.
    -
    Jeff Cochrane - VK4XA
    East Innisfail, QLD, Australia
    F-YDKI1

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