ATC Antennas
- Thread starter ctadam12
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When an aircraft is overhead it’s fairly close and line of sight and you could probably talk to it using a paper clip as an antenna. An aircraft at 35,000ft directly overhead is about 6.6NM away and if it’s 10NM down range it’s still very line of sight. At about that point you should be within the very broad pattern of a low gain airport base antenna and you want any gain at the horizon when the aircraft is far away like 100+mi.
They don't. There is actually a spot over comms. sites, radars, VORs where there is no coverage. It's not a large area, and doesn't exist very long due to the speed of aircraft, but it does exist.
spanky15805
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ctadam12...you can read all about the antennas they use:
www.antennas.com
Depends on the site, some will be mounted on metal poles to pull down the lobes, like an RTR and on RCAG sites they use fiberglass poles to try and fill in the doughnut hole(at least make it smaller) at 40000 feet.
VHF Archives - Antenna Products
www.antennas.com
Depends on the site, some will be mounted on metal poles to pull down the lobes, like an RTR and on RCAG sites they use fiberglass poles to try and fill in the doughnut hole(at least make it smaller) at 40000 feet.
Are the RTR sites pretty much the same set up as an RCAG? My closest airport, MKE, has two on site, but the RCAG is like 3 miles south of the airport. I'm thinking they belong to the MKE TRACON?ctadam12...you can read all about the antennas they use:
VHF Archives - Antenna Products
Depends on the site, some will be mounted on metal poles to pull down the lobes, like an RTR and on RCAG sites they use fiberglass poles to try and fill in the doughnut hole(at least make it smaller) at 40000 feet.
ind224
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I once had a cone of ambiguity but I sold it.
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When they need to, they using antennas like in my photos in this thread of some FAA RCAG sites (click on this link that Radio Reference post) to see): What is this?
spanky15805
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dlwtrunked, all the pictures you linked to are probably FAA sites. For AM, you will never see co-located utilities, well you shouldn't except for ads-b/c, most of the time, maybe, depends...
ctadam12, RTR's, RCAG's, RCO's BUEC's pretty much all look the same. RTR's are usually on the airport property.
ind224, you know if you file a long form you can get tax credits for ten years but the depreciation schedule the IRS uses sucks.
ctadam12, RTR's, RCAG's, RCO's BUEC's pretty much all look the same. RTR's are usually on the airport property.
ind224, you know if you file a long form you can get tax credits for ten years but the depreciation schedule the IRS uses sucks.
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I said all the photos I posted were FAA sites--I took all those photos that were linked to in the other thread (I have visited dozens and done similar). In fact, at one, the first photo, I talked to the FAA maintenance person while there. I am not sure what you are trying to tell me or correct me.
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