[DogParkList] MLDX distance calc

[Don Agro]

Hi David,

On 29-Aug-07, at 5:19 AM, David Ferrington, M0XDF wrote:


> Presumably the dist calc is based on the 2 lat/lon values, QSO lat/ 

> lon - QTH

> lat/lon?

> However, what if you've been portable (S.France, 700 miles south of  

> my home

> QTH) and have entered the QTH square for that location - does MLDX  

> take that

> into account?


Yes, if there is a prefix greater than 1 character long that isn't  
maritime mobile etc.

http://www.dogparksoftware.com/MacLoggerDX/Manual/Pages/ 
controlwindow.html
Here is how MacLoggerDX determines Map position for a call/prefix:

1 MacLoggerDX resolves all call signs to the DXCC country level using  
the data published in the ARRL Operating guide subject to special  
issue call overrides in dxpeditions.dat "Locator: Country".
2 bearings.dat resolves specific prefix based locations - "Locator:  
Call".
3 QRZ lookup may provide a zip code which can be resolved by zip.dat  
which has the entire US 1999 census zip to post office latitude and  
longitude data "Locator: US Zip".
4 cities.dat has entries where if the city is known and found the  
latitude and longitude can be resolved "Locator: City".
5 If the call is in either your log, or your user call book, that  
location data is found in a lookup "Locator: Log GS".
6 APRS position reports will of course supersede all the above for  
location data "Locator: APRS".
7 If Internet Lookup is enabled and if there is a grid square or  
Latitude and Longitude data provided on the Internet this will be  
used "Locator: iNet GS", "Locator: iNet LL", this is uaually the most  
accurate since the operator has provided this data himself.


73 Don Agro VE3VRW

D o g   P a r k   S o f t w a r e   L t d .

email: dagro at dogparksoftware.com
   www: http://www.dogparksoftware.com
     iChat AV:dogpark at mac.com