Thanks Pete,
There's a Peter Oldfield that has a program DX-AID that I have sent an email inquiring about his software. (
poldfield@compuserve.com)I got this info from the DXers antenna book by ON4UN. I don't know how old this book is, maybe 4yrs old, so this Peter Oldfield may not be doing DX-AID anymore.
There was a section in there about long and short path.
I also read that the long path can sometimes be 180 degrees opposite the short path, but then I read on that this long path is a seasonal thing too.
Very interesting happenings in the aether.
73..........Fred
This is from a review on eham.net:
Unfortunately, created at the time of MiniProp Plus and CAPMAN, DXAID runs in DOS protected mode and uses the EGA Hicolor resolution with all constraints of this environment. For example, a runtime error 207 ejects you from the system if you don't validate the current conditions before to run the forecast ("Forecast" menu, Set Current conditions). But it is as much a programmation error not handled by the system as an user error who wants to go faster than the system in "cutting corners" of the validation process, Hi !
DXAID is available in two DOS versions, one supported by Windows 9x, the other by Windows 2000/XP/ME. It can be purchased by emailing the author in Canada (as of Sept 2004).
Can't find any info about it after 2004.
I also read that the long path can sometimes be 180 degrees opposite the short path, but then I read on that this long path is a seasonal thing too.
Determining the long path and short path distance and beam heading between two locations requires a number of parameters to be considered to do it accurately.