David Lord wrote: [] > Late last night I got round to connecting the Garmin GPS18x-LVC and > just after midnight it stepped from around 60s to 0.5ms and 8 hours > later is between -74us and +62us. The module is in south facing > upstairs window in same location I failed to get anything useful > from the Globalsat BR304. Now I need to make a 30m extender cable to > get the signals downstairs to back of house to connect to servers. > > David
Good news, David. Sensitive little pill-box, isn't it? One suggestion might be wireless - could you get a very atom-based small PC or even a wireless router to accept the GPS signal and serve NTP over the WLAN? Cable would be nicer and my preference. With Dave Hart's new PPS support it /should/ be possible to send just the PPS signal around (two wires), and use that to refine an Internet-derived time. I might be inclined to go for a screened cable if you need a 30m run, but thin 3-core mains cable /might/ suffice. The RS-232 I used to use was very tolerant of cabling, but it probably had higher signal levels and robustness than the GPS 18x LVC. Cheers, David _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
