Hi,
Does anyone know of any software I can install with windows XP that
if I were to input a "point of origin" NGR and a receiving station NGR
would give the range in Km and bearing wrt to magnetic north.
UK ONLY
Cheers,
Mike

This freeware may not meet all your needs, but it's amazing!
http://www.qsl.net/w6elprop/

----------------------------------------------------------------------------
----

W6ELProp predicts ionospheric (sky-wave) propagation between any two
locations on the earth on frequencies between 3 and 30 MHz. There is no
charge for W6ELProp when used for non-commercial purposes.

This is the primary W6ELProp distribution site. Any new version of W6ELProp
will first be available at this site.

Version 2.70 permits the user to specify a terminal location by its IARU
Grid Locator, and permits the user to optionally display areas for only one
prediction frequency at a time in the Frequency Map.





yodar


----------------------------
"The Genie" wrote in message
...
Hi,
Does anyone know of any software I can install with windows XP that
if I were to input a "point of origin" NGR and a receiving station NGR
would give the range in Km and bearing wrt to magnetic north.
UK ONLY
Cheers,
Mike

The Genie wrote:
Hi,
Does anyone know of any software I can install with windows XP that
if I were to input a "point of origin" NGR and a receiving station NGR
would give the range in Km and bearing wrt to magnetic north.
UK ONLY
Cheers,
Mike



Hi, Mike,

As Joe recommends get a copy of W6ELProp if you have even
the slightest interest in HF propagation.

W6ELProp does not do magnetic bearings that I can tell.

As far as I know the only program that does magnetic bearings
is my freeware, lat/long/grid-locator,
distance and bearing (true and magnetic), Miles/Watt,
MaxiMUF, DX database... program GCGC
which uses an ellipsoidal earth model
with WGS-84 as the default.
Just give it Lat1/Long1 and Lat2/Long2 (nearly free format),
or with less accuracy due to the nature of grid locators,
grid1 instead of lat1/long1,
and/or grid2 instead of lat2/long2
See the link below.

The offset from true to magnetic (compass) bearings uses
the World Magnetic Model which calculates the local
horizontal magnetic field direction within a degree or less
(local magnetic anomalies excepted).

For Windows XP, use GCGC in a DOS window that is opened
by running "cmd.exe.)

"NGR" = ??

BTW, the best online tutorial on distance and bearing calculations,
with worked examples, is Ed Williams's Aviation Formulary.

http://williams.best.vwh.net/avform.html


Have fun.

Cheers, 73,

Ron McConnell


N 40º 46' 57.9" W 74º 41' 21.9"
FN20ps77GU46 [FN20ps77GV75]
Magnetic Variation = 13.0º W in October 2003

* GCGC executable and source at

http://home.earthlink.net/~rcmcc

There are 10 kinds of people:
those who understand binary arithmetic
and those who don't.