If they have FCC ID numbers, you may be able to find photographs of the inside of the devices, which in turn could reveal the chipset if the photo was clear, then with the chipset you could determine if a 1 second pulse is available.
Years ago I got a GPS board from Asin or something like that. It had a 1 second pulse, but absolutely not locked to gps time. So you need to beware of what looks like a timing pulse but might not be. -----Original Message----- From: "Don Latham" <[email protected]> Sender: [email protected] Date: Wed, 26 Sep 2012 14:11:10 To: time nuts<[email protected]> Reply-To: Discussion of precise time and frequency measurement <[email protected]> Subject: [time-nuts] usb gps devices Have any of the 'nuts hacked one of the very simple very cheap GPS USB devices for your car top to see if there is an available 1 sec tick inside one of them somewhere? I have one that I intend to look at, but I'll have to get a scope and teenyweeny probe outside to do it, so, if there is a readily available something, I'd like to know. Thanks! Don -- "Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind." De Erroribus Medicorum, R. Bacon, 13th century. "If you don't know what it is, don't poke it." Ghost in the Shell Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ 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. _______________________________________________ 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.
