> Does anyone know if any of those all-in-one hockey puck GPS receivers > put out PPS on the serial cable? The type that has the antenna and GPS > together, with a serial cable hanging off of it. I'm thinking about > using one for a timing project. The more sensitive, the better, as it > will be used indoors.
The Garmin GPS 18 is popular with the NTP crowd. A year or two ago it was replaced/upgraded with the 18x. There are 3 versions. One for USB (no PPS), one with bare wires (needs 5V and has PPS), and another with a car adapter. Be sure to get the right one. Mine is inside. It works most of the time. I've seen it report time that is off by a second. I think that only happens when it is recovering from not-enough-satellites, but I don't have good data. If you want another option, the best alternative I have seen is the GlobalSat MR-350. It's a through-hole mount rather than a magnetic mount. It comes with a PS-2 style connector. (You can chop it off.) The PPS is only 1 microsecond wide. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
