Talk:Loran-C

Apologies

I would like to make initial apologies to the original contributor of the article. I found the information in there arcane and at an unaccessible level for a general encyclopedia. I also found some bits that seemed inaccurate (for example, the original claimed that equal TD occurs along the BLL -- actually, it occurs along a line perpendicular to the BLL intersecting at the midpoint between stations).

I'd also like to make apologies for the diagram I uploaded. It is extremely crude and inaccurate (basically, the curves are not hyperbolas as they should be), but IMO it does get the point across.

I went looking for images of a LORAN station and the used images from the first website I could find -- Malone Station.

Lastly, I know that the article could have much more added to it: more info on receivers, notes about "correction factors", a note about multi-tasking stations (i.e. stations which serve as secondary and/or master and/or both in more than one chain, aka "dual-rated"), the longevity of LORAN-C in a world gone almost completely over to GPS, current LORAN-C advocacy, eLORAN and digital LORAN, more detail on LORAN-A, history of LORAN rooted in WWII.... come to mind.

-- [[User:KeithTyler|Keith D. Tyler [flame]]] 00:46, Dec 18, 2004 (UTC)

Acronym

The LORAN acronym is actually LOng Range Aids to Navigation. —This unsigned comment was added by 147.240.236.9 (talk • contribs) .

According to the US Coast Guard's 1992 LORAN Handbook, Chapter 1, "LORAN is an acronym for long-range navigation."[1]. (PD-US-GOV) I would assume, since they are the operator of LORAN in the USA, they would know what it is called. --Dual Freq 23:57, 16 March 2006 (UTC)

It seems that the Omega_Navigation_System link does not reference the correct article -- Robert Manning

Goniometer (Transmitters and antennas section)

The link to Goniometer seems to refer to a completely different item to anything which could be connected with a loading coil which passes high power to an antenna.

Accuracy?

Article should mention what amount of accuracy can be depended upon. Can you plot your location within, say, 10 meters with a modern LORAN receiver? Tempshill 18:12, 10 October 2006 (UTC)

That might refer to the test in Alaska, where WAAS type corrections were transmitted via LORAN and used as a backup for WAAS, at high latitudes.[2] It doesn't look like it will be implemented, but it offers an interesting use for the system in an area where geosynchronous satellites are low on the horizon. That would mean that regular GPS would be less accurate than GPS + WAAS corrections sent via LORAN. Beyond that, I'm not sure I can help or provide a citation. --Dual Freq 00:05, 11 October 2006 (UTC)

Height of LORAN-C towers

Please find out the height of antenna towers used for LORAN-C transmission. If they are taller than 300 metres respectively 350 metres, than add them please to List of masts and List of world's tallest structures. In both tables, there are already entrances for the station of Port Clarence at Alaska and the former LORAN-C transmitter Hellissandur on Iceland.

Backup antennas

Is it possible to use backup antennas, while maintenance on main antenna without enlarging error of position? Is it possible to tell the receiver if a backup antenna at an other location is used?