#### ODX / OMDX / ?

Earl Needham

I'm trying to understand the difference between ODX and OMDX.

Looking at:

KX4I on 50313.0 in FT8 at 8/4/2022 1510Z (K: United States)

ODX is shown as 325 and OMDX is 500.

Looking at the definitions -- well, I just don't "get it".

ODX: the distance from the center of the Maidenhead gridsquare of the closest station to spot the DX station and the Operator's latitude and longitude in miles or kilometers; if no DX station or spotting station gridsquare is known, this value is set to -1 (displayed as a blank entry in the Spot Database Display)

OMDX: the maximum distance from the center of the Maidenhead gridsquare of the closest station to spot the DX station and the Operator's latitude and longitude in miles or kilometers

Does this mean that ODX is the distance from me to the center of the gridsquare the spotting station is in?  And how can the maximum be a different value if both reference the center of his gridsquare?

Tnx
KD5XB

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