On Tue, 30 Oct 2007, Dave Sergeant wrote:

> I thought your figures looked a bit odd, and intuitively Tom should 
> be further. I put the figures into G0GJV's Minos VHF logger:

Thanks Dave!

I initially assumed myself that no-one would be further than Tom and 
checked my log-book entry. I had IO80IU correctly noted, along with 
"1039km". Not sure where I got the 1039km from now!

Checking with QRB/QTE gives me 1052.774km / 654.176 miles

Checking Peter G3LDO's estimated IO90ST gives  1052.976 / 654.289 miles

Peter's still best DX, by 200m!

Cross checking with "WinGrid" gives Tom IO80IU = 655.3 miles and Peter's 
IO90ST = 655.5 miles. (WinGrid is American and only speaks 'miles').

Looks like there are some differences in the maths between the 3 progs 
we've used. 

Don't know what I used initially to work out Tom's 1039km...but it was 
evidently wrong! Must have been my slide rule?!

> 
> GM4SLV    IP90GG
> to:
> G3OLB      IO80IU    1054km   187deg
> G3LDO      IO90ST   1054km   176deg
> 
> and for reference:
> G3YMC     IO91PJ   988km     177deg


Regards and thanks.

John
GM4SLV