Converting old GPS marks to new?

[jackamundi]

I have been given some old gos marks in the format 24 xx xx 152 xx xx. I want to convert to 24 xx xxx 152 xx xxx format. Is there someone who can tell me what GPS format is likely to have been used for these so I can convert them? TIA. Jackamundi

[tunaticer]

http://www.latlong.net/degrees-minut...ecimal-degrees will convert the coordinates.....most GPS units will automatically convert formats anyway.
As far as the datum goes, that is harder to determine....depends on the initial creator of the marks and what datum he was using.

[jackamundi]

Cheers..I'll have a go.

[GBC]

GPSBabel: convert, upload, download data from GPS and Map programs

I've used this successfully in the past.