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WA2ISE > TECH 09.12.20 00:54l 9 Lines 1381 Bytes #999 (0) @ WW
BID : 10748_AL0Y
Read: GUEST
Subj: Old GPS units as accurate hamshack UTC clocks
Path: IW8PGT<IZ3LSV<IK5FKA<IK5FKA<PE1RRR<K5DAT<AL0Y
Sent: 201208/2253Z 10748@AL0Y.#NNJ.NJ.USA.NOAM BPQ6.0.20
As GPS units have been around a while, older ones start showing up at garage sales and such, as people don't want to spend money just to update the maps vs just buying a new one.
With the Garmin nuvi, (assuming it can get satellite reception inside your shack) starting from the screen that you get after powering up (saying "Where to?, View Map", and shows buttons for volume and tools), select "tools". Select "settings", then select "time", then press the button under "time format". You'll then get to pick 12 hour, 24 hour or UTC. We want "UTC" so select it. Hit "OK" then back your way out to the "Where to?, View map" screen. Then select "tools" and then scroll the screen down so you see the "world clock" icon. Select it, and you'll get a clock face (however it's still a 12 hour face) but under that you'll see the current UTC date and time. Though it displays a little small.
This will work anywhere in the world, as GPS satellites orbit over everywhere round the world.
You can select "World Map" to see where it's daytime, nighttime and where the grayline is. The grayline, which is where in the world it's sunrise or sunset, is a strip of land and sea around the world where propagation can be very good. This "World Map" looks a little like a miniature Geochron. And this screen provides UTC time zulu (which you selected above) and date above the map as well.
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