Originally posted by rodeo
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Originally posted by Ressy View PostWe were taught to use the buildings electrical ground system, as a separate rod wont do much good due to the electrical potential rise that would occur with such high power of a strike, we put the arrestors close to equipment or where cables enter the building, not up the masts, so roof level (assuming thats where it enters the building) would be fine.
Originally posted by Ressy View PostWe have a lot of people covering YRED, but I suspect they are windows feeders or regular dump1090 users like myself, I know T 1, 27 and I think 29 and Sunny Coast 2 also sees ground or very close to it at YRED, FR24 are severely limiting themselves for only supporting mlat on pi's
Originally posted by Ressy View Postlol, indeed, I recall when I did my cert course the first thing the facilitator said in relation to lightning is "_assume_ every direct strike with destroy" - even with arresters, and what survives is in your favorT-YBBN50 - Kallangur, QLD, Australia
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Originally posted by bhaal View Post... I want a RaspberryPi rig running there for MLAT, specifically FA MLAT so I can see on my local radar the MLAT positions...
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Originally posted by bhaal View PostAhhhh, ok, so I shall now locate the current ground spike, haven't needed to look for it before. I cannot do modifications as I am rental (though it is family owned), but I am sure I can make it all work. When I move my Pi etc under the patio I will probably put the arrester in the best spot where the ground wire has best unobstructed path to the ground spike...
Originally posted by bhaal View PostI can see down to 100ft off the deck of YRED, so that isn't why I want/need someone in that area. I want a RaspberryPi rig running there for MLAT, specifically FA MLAT so I can see on my local radar the MLAT positions.. I get positions for aircraft generally above 1500ft, but nothing lower. Which gets annoying for things like Polair2 etc.. But also helpful for other aircraft which I lose in my general area..
Originally posted by bhaal View PostWith this in mind, I think I might put a couple of RJ45 arresters in place as well, one between Pi and switch at that end of the house and one on that switch's uplink... Hopefully that will help prevent things inside the house going up in smoke... But as you say it's the luck of the draw...
So, if its other side of house, I think I'd only be concerned with protecting it near the switch, which I assume is close to where you'll install your common terminal (only run one earthing wire/clamp to the powered earth) - use a communications earth terminal to connect it to all your other earthing wires of the arresters.
* Again, I'd check the legalities of doing it yourself - it may affect (nullify) your insurance if your house is damaged or blows up, cause we all know they look for any reason on not paying out. Maybe find a newsgroup or forum for aussie sparkies and ask there about legalities, or which govt dept can help answer it.
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Originally posted by Kpin View PostBest of luck, but please don't become one of those how cross feed FA MLAT to FR24. There are quite a few feeders that take FA MLAT resolutions and turn them in to FR24 ADS-B lookalikesT-YBBN50 - Kallangur, QLD, Australia
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Originally posted by Ressy View PostIn a private house, it should be directly below the switch board, as for modifying it, assuming it is legal for non sparkie/telco_tech to touch it, all you can do is clamp to it, a decent electronics store (by decent I don't mean DSE/Jaycar) should be able to supply the correct copper clamp, so its not really modifying in a way that would upset landlords
Originally posted by Ressy View PostMaybe approach the Redcliffe aero club to host one?
Originally posted by Ressy View PostSo, if its other side of house, I think I'd only be concerned with protecting it near the switch, which I assume is close to where you'll install your common terminal (only run one earthing wire/clamp to the powered earth) - use a communications earth terminal to connect it to all your other earthing wires of the arresters.
Originally posted by Ressy View Post* Again, I'd check the legalities of doing it yourself - it may affect (nullify) your insurance if your house is damaged or blows up, cause we all know they look for any reason on not paying out. Maybe find a newsgroup or forum for aussie sparkies and ask there about legalities, or which govt dept can help answer it.T-YBBN50 - Kallangur, QLD, Australia
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Originally posted by bhaal View PostI have thought about this but the problem is that they are almost at sea level, with some 15mtrs in height blocking them from me
Sitting over at Bongaree near jetty with a laptop and dongles 10cm antenna ar ground level plus 3feet I get ground level at YBBN, I also get much lower coverage *and* about 4 times further west then I do at YCAB with this whopping great thing in the air.
Originally posted by bhaal View PostFor the sake of the insurance and the $100 or so it would cost I will more than likely have a local sparkie come out and provide the clamps and attach them. Rather be safe than sorry...
In telecomms we are able to access building earth and do it directly (except from within switchboard itself) so that exemption to us is granted I think because there is an extensive session on this stuff we have to know and pass, correct methods, equipment, resistances, procedures, separations, and connections for normal groundings, surge protection, and for noise reduction earthing (TRC), and as with other sections you gotta pass it all, its 100% required pass rate now days, so if you screw up or cut corners, you get told to fix it, and if you cant. you fail the entire course no mater how good you are at all other modules, fair enough I suppose because the chances of loss of life and/or property is very high when dealing with this stuff, and its usually not your own life you put at risk.
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Originally posted by Ressy View PostMaybe so, but remember the advantages of all that clear open space, and, being coastal, the horizon to west over D'Aguilar ranges would be lower, therefor greater range.
Originally posted by Ressy View Postthen I do at YCAB with this whopping great thing in the air.
Originally posted by Ressy View PostYou probably cant go wrong, but yeah, if disaster ever did occur, and you can show a qualified sparkie did the connections, they cant get out of it
Originally posted by Ressy View PostIn telecomms we are able to access building earth and do it directly (except from within switchboard itself) so that exemption to us is granted I think because there is an extensive session on this stuff we have to know and pass, correct methods, equipment, resistances, procedures, separations, and connections for normal groundings, surge protection, and for noise reduction earthing (TRC), and as with other sections you gotta pass it all, its 100% required pass rate now days, so if you screw up or cut corners, you get told to fix it, and if you cant. you fail the entire course no mater how good you are at all other modules, fair enough I suppose because the chances of loss of life and/or property is very high when dealing with this stuff, and its usually not your own life you put at risk.T-YBBN50 - Kallangur, QLD, Australia
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Originally posted by bhaal View PostI do understand and get that but I need somewhere which can see down to about 500ft over my house
Originally posted by bhaal View PostDo you feed to FA as well?
Originally posted by bhaal View PostYeah, WH&S has come a long way.. Making sure everyone has their bases covered, coz Insurance companies are in the business of making money, not paying it out (for the equip, not lives lost).. Do you have a rigging license as well?
and, no, I don't hold a riggers.. that reminds me, they do similar courses where I did my telco stuff, one of them is pole rescue, thankfully they used a weighted dummy to simulate a real person, coz every student had to lower from top this limp body, and the amount of times that poor dummy was smashed into the poll coming down, haha I kept thinking if that was me I'd tell em to #### off and i'd wait for fire rescue
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Originally posted by Ressy View PostI'm pretty sure YRED would sh%t that in, we see 300 ft Bribie from here and we have some 50 foot trees nearby in that direction, from memory you said you can see YRED down to 100 feet? So it would have no problem seeing your area at about that, or lower - if you can get on top of a hangar
Originally posted by Ressy View PostNope thats the one we dont because of software build problems, haven't looked at it in a few months so maybe they've sorted it, I dunno, I might again try one day when I get bored.
Originally posted by Ressy View Postohh gawd yes, everytime we did an activity, from memory about half a dozen or so per module we had to do JSA's, like their Env Prot codes, we probably ended up at end of teh course knowing more about WHS and Env Prot Act then the jokers who enforce it
and, no, I don't hold a riggers.. that reminds me, they do similar courses where I did my telco stuff, one of them is pole rescue, thankfully they used a weighted dummy to simulate a real person, coz every student had to lower from top this limp body, and the amount of times that poor dummy was smashed into the poll coming down, haha I kept thinking if that was me I'd tell em to #### off and i'd wait for fire rescueT-YBBN50 - Kallangur, QLD, Australia
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Last edited by Oblivian; 2015-12-31, 05:14.Posts not to be taken as official support representation - Just a helpful uploader who tinkers
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It appears YSBK22 has been AWOL since the 14th and I haven't realised it. Haven't worked out yet was caused the feed to fail considering its been rock solid previously. My parallel FA feed didn't suffer so it wasn't something dump1090 related, just a failure of the FR24 feeder.
Back feeding again after a service restart.
Would have been nice to know it had failed ......(ala FA's auto email.....)T-YSBK22
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Originally posted by rodeo View PostIt appears YSBK22 has been AWOL since the 14th and I haven't realised it. Haven't worked out yet was caused the feed to fail considering its been rock solid previously. My parallel FA feed didn't suffer so it wasn't something dump1090 related, just a failure of the FR24 feeder.
Back feeding again after a service restart.
Would have been nice to know it had failed ......(ala FA's auto email.....)T-YBBN50 - Kallangur, QLD, Australia
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