Tripmaster geoid question

[oldpaint]

I'm running 1.8a on my TTgo 700, so I've clicked please correct on the geoid question and put in a value that makes the altitude correct. I'll be traveling about 1500 miles from here next month and was wondering if there is a table of geoid corrections in the tripmaster software or will I need to correct the value as I pass thru different areas?

 

[roussillat]

I'm running 1.8a on my TTgo 700, so I've clicked please correct on the geoid question and put in a value that makes the altitude correct. I'll be traveling about 1500 miles from here next month and was wondering if there is a table of geoid corrections in the tripmaster software or will I need to correct the value as I pass thru different areas?

Unless you're flying with your Tomtom as an altimeter (which I strongly disencourage you to do), you don't need to change the correction for such a small displacement.
The major change in geoid correction is when you're travelling North to South (or reverse).

Anyhow, if you want to calculate it along your way :
http://sps.unavco.org/geoid/ is your friend...

 

[oldpaint]

Thanks for the quick reply. I am going north from here.. Newfoundland.

I wish I had found tripmaster earlier. The logging function would have been very useful on car club follow the leader trips.