[time-nuts] Loran transmitters back on the air

[Michael Perrett]

Loran C absolute accuracy is between 0.1 and 0.25 miles (
http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/APN/Chapt-12.pdf)
but the repeatability is way better (from 60 to 300 feet, same ref).

When it was safe and fun to fly to Baja, Mexico I would record both ends of
the runway with my Northstar Loran C. The absolute accuracy was miles off
(geometry was horrible, way out of the coverage area), but once marked, I
could return to the same spot every time. I kept a complete table of the
Baja and west coast of the mainland permanently in my flight bag.

Michael / K7HIL

On Fri, Mar 2, 2012 at 10:15 AM, Mike Naruta AA8K <aa8k at comcast.net> wrote:

>
> In 1983 we were testing Loran for a vehicle
> tracking application.  We had a van with a
> Loran aviation antenna mounted on the roof
> and a relatively inexpensive marine Loran
> receiver.
>
> We started with an informal test.  This was
> miles inland, about an hour's drive North
> of Detroit, Michigan.
>
> We parked on the shoulder of the road, beside
> a wooden post.  I wrote down the latitude and
> longitude.  My supervisor then drove the van
> a mile away.  Then I looked at the Loran
> readout while he drove the same road.  I only
> looked at the display, while giving him verbal
> instructions to slow down, slow down more, and
> finally I said, "Stop!"
>
> Dick said, "You're not going to believe this."
> I looked up and right outside my window was
> the same post!
>
>
> On 03/01/2012 11:26 PM, Hal Murray wrote:
>
>>
>> What sort of accuracy can I expect from a Loran type system?
>>
>>
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