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  • Ressy
    replied
    Originally posted by bhaal View Post
    I've no experience with antennas as I only have my DIY coco, but that site is horrible...
    My eyes are bleeding after looking at it...

    But whats more concerning is a failure to comply with PCI DSS by suggesting payment may be made by emailing credit card details.
    Though they have been around for a while, '83 (ASIC verified) (which their website design sadly reflects) they've been doing aircraft tracking since 2006, so have been around long enough to have done something right.

    Leave a comment:


  • bhaal
    replied
    Originally posted by cloud_9 View Post
    Any reviews on the ADS-B antennas from aircrafttrackingavionics.com.au?
    I've no experience with antennas as I only have my DIY coco, but that site is horrible...

    Leave a comment:


  • cloud_9
    replied
    Any reviews on the ADS-B antennas from aircrafttrackingavionics.com.au?

    Leave a comment:


  • bhaal
    replied
    Originally posted by Kemistry View Post
    Thanks bhaal for the info. Now I wonder why the F- radars can see it but I can't. To be clear, FR24 web showed it but my local receiver did not register it (not even in tables that show ACs without positions). Funny coz I thought that I normally can see everything around BNE and concluded it was dud data on FR24. It was not flying too low for me so I wonder if it sends DF messages that I am not decoding? Hope I don't have to dig into all that message types again - gives me a headache.
    I can't help you with that one.. I am running latest (I compile from git source regularly) dump1090-mutability with no unusual settings.. I see that SLING on a regular basis on my radar..

    Leave a comment:


  • Kemistry
    replied
    Thanks bhaal for the info. Now I wonder why the F- radars can see it but I can't. To be clear, FR24 web showed it but my local receiver did not register it (not even in tables that show ACs without positions). Funny coz I thought that I normally can see everything around BNE and concluded it was dud data on FR24. It was not flying too low for me so I wonder if it sends DF messages that I am not decoding? Hope I don't have to dig into all that message types again - gives me a headache.

    Leave a comment:


  • bhaal
    replied
    Originally posted by Kemistry View Post
    Anyone else seeing dud aircraft callsign "SLING" south of Brisbane? Hex 053977 Rego C-FTGI seems to be flying in South Africa. Two F-feeders credited with the data F-YBBN2/5.
    I do see this on a regular basis, I've asked questions about this in the FB spotters groups and apparently it is a sling (D6SL) ... And more than likely the rego is 25-8514 .. Not sure how accurate this info is, but at the time it was said to have been the only sling to have landed at YBAF when I saw the flight land there on radar...

    Leave a comment:


  • Kemistry
    replied
    Anyone else seeing dud aircraft callsign "SLING" south of Brisbane? Hex 053977 Rego C-FTGI seems to be flying in South Africa. Two F-feeders credited with the data F-YBBN2/5.

    Leave a comment:


  • airnrail
    replied
    Originally posted by bhaal View Post
    More people need to fly in/into/out of Australia on Saturdays... Cannot believe the huge drop in flights on Saturday....
    I've been watching FR24 since the height of the resources boom and even then Saturdays, particularly at night, were always the quietest day of the week. I guess a lot of people get where they want to go on Friday and go to where they have to be on Sunday or Monday. Aside from the Sydney curfew, nights have never been busy anywhere in Australia except Perth after about 10.00pm - I'm not sure how Melbourne and Brisbane airports can afford to run 24/7 operations but maybe there are a lot of smaller non-ADS-B aircraft like couriers using them late at night. Overall there is a marked downturn in the number of flights throughout Australia, any day, any time, since economic downturn has set in coupled with Qantas and Virgin ending their capacity war.

    Leave a comment:


  • fungus
    replied
    Originally posted by bhaal View Post
    More people need to fly in/into/out of Australia on Saturdays... Cannot believe the huge drop in flights on Saturday....
    Yes,

    2 and a half hours to curfew here in SYD and I've not seen it this quiet on the map in a very long time. Only 8 aircraft on my uploader at the moment...

    In fact, most of oz seems to be very quiet tonight.

    Regards,
    Gregg
    Last edited by fungus; 2016-05-07, 10:33.

    Leave a comment:


  • bhaal
    replied
    More people need to fly in/into/out of Australia on Saturdays... Cannot believe the huge drop in flights on Saturday....

    Leave a comment:


  • bhaal
    replied
    Must be some good conditions tonight, suddenly I am seeing a number of planes on the ground at BNE .. How odd...

    Leave a comment:


  • Kemistry
    replied
    Originally posted by bhaal View Post
    What's your messges per aircraft per second at?
    Now that’s a hard question to answer, bhaal. I think there may have been some discussion on this topic somewhere in this forum – but I forget the details. I believe there are many different types of transponders on different (and the same) aircraft that transmit very different numbers of all the different types of DF messages. Maybe all those differences across just a selected time period make it difficult to give a representative average over all time. My setup seems to be fairly discriminatory between aircraft (maybe my RF filter helps) so, just now, I’m getting about 200-350 messages per second with about 60 active aircraft (and TEST1234s). For a given modern aircraft I regularly log more than 12 records with a different timestamp within a particular second. But probably average about 8 records per second over the longer period of time that I track that particular flight. And remember that this so much depends on the aircraft avionics.
    Oops - I forgot to mention that about 5-6 ground vehicles are often (but not always?) included in my message counts. They all have their location data so I believe that they negatively impact my average-range statistics as do all aircraft on the ground at YBBN. I have lots of close range data that pulls my average range down even though I have 360 deg out to 120 miles at less than 200 feet. Go figure that average-range means anything in FR24 stats.
    Last edited by Kemistry; 2016-05-03, 00:47.

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  • bhaal
    replied
    Hey Kemistry,

    What's your messges per aircraft per second at?

    Leave a comment:


  • Ressy
    replied
    Originally posted by bhaal View Post
    Ahhhh ok, as they aren't on the AP grounds that changes things.... I can think of a few places they might be... Oceanview, Mt. Gravatt, Mt. Cootha and any of the tall buildings in the city...
    Not at Ocean View (Actually Mt Mee), I can guarantee you that

    I dont have access to the Mt Glorious site, or Qld Comms site at Coot-tha, so it's possible may be one on those sites.
    Maybe North Straddy too

    Edited:

    I suppose someone with some spare time could build a yagi, spin around to get directions
    Last edited by Ressy; 2016-05-01, 01:54.

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  • bhaal
    replied
    Originally posted by fungus View Post
    Fellow aussies;

    The information I'm posting here isn't directly relevant to your querie up there regarding those Mode-S sites but I hope is of some help to you in tracking them down. Here in Sydney there are 4 of them, 7C7FCA, CB, CC and CD of which I pick up two of them permanently and one intermittently on my SBS-1 unit. As I've posted elsewhere on the forum where these sites are located I wont repeat it all here but suffice it to say one is on Mt Razorback southwest of the city (elevation approx. 1,600ft) between Picton and Menangle, one is at Kurrajong Heights to the northwest of the city (elevation approx. 1,000 ft) and two are on Centrepoint Tower in the city (elevation approx. 1,000ft). (note these elevations may not be 100% accurate as I'm going on memory). Interestingly on my unit they are all displayed at elevation 0ft.

    The two at Centrepoint Tower used to be picked up by the 'F' feeders and displayed on the FR24 map but would be sprayed all over the city, M-LAT being what it is at those elevations. That was recently fixed by the FR24 team and they are now hidden which is good because they were very disconcerting when Rwy 16L & R were in operation and they kept getting in the way of landing aircraft display.

    As I said, I hope this information might help you guys to figure out where those sites are up there in and around Brissy. I thought the elevations alone may give you a clue. Those here are under a callsign ('SSM' - SSM1, SSM2, SSM3, SSM4) which is operated by 'Sydney Site Monitoring' but I haven't been able to find any equivalent up there.

    Good luck and regards,
    Gregg
    Ahhhh ok, as they aren't on the AP grounds that changes things.... I can think of a few places they might be... Oceanview, Mt. Gravatt, Mt. Cootha and any of the tall buildings in the city...

    Leave a comment:

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