Torrey pines reef GPS - Kayak Fishing Adventures on Big Water’s Edge

Mr_PeaCH · 02-18-2006, 06:47 AM

I noticed the GPS measurements you reported were in degrees, minutes and seconds (DMS) which is sort of old-school now. Most people's newer handheld GPS devices use the more accurate degrees, minutes, 'thousandths-of-seconds' or DMM.

If you have some software that came with your device you should be able to convert between DMS and DMM rather easily but be sure you enter those numbers while in DMS and then switch back or convert the numbers first and then re-enter them into DMM.

Hope I'm making sense. But the key is with the final number. In DMS the seconds places goes from 00 to 59 and then the minutes counter advances. In DMM, 59 seconds would look something like 990. So if you input DMS numbers into a DMM-set device you're going to be off by a bit.

02-18-2006, 06:47 AM	#4
Mr_PeaCH Member Join Date: Mar 2005 Posts: 61	I noticed the GPS measurements you reported were in degrees, minutes and seconds (DMS) which is sort of old-school now. Most people's newer handheld GPS devices use the more accurate degrees, minutes, 'thousandths-of-seconds' or DMM. If you have some software that came with your device you should be able to convert between DMS and DMM rather easily but be sure you enter those numbers while in DMS and then switch back or convert the numbers first and then re-enter them into DMM. Hope I'm making sense. But the key is with the final number. In DMS the seconds places goes from 00 to 59 and then the minutes counter advances. In DMM, 59 seconds would look something like 990. So if you input DMS numbers into a DMM-set device you're going to be off by a bit.