Well Bob There you go changing the game just a bit. I saw the NTP settings and was thinking for some reason it might want to access a NTP server. I can see I have it backwards. Just may add a IP. I would have gotten there given time. But I will take a short cut any day. The Net RS is reasonably low power at 12V @ .35A or 4.5W. Its not apparent in the unit that the power coming in hits an inverter. I think its a linear regulator. Nothing looked like a choke for conversion. Did stick the antenna out of the window for a clearer view of the sky and picked up 8-10 db. The house blocks to the north. Regards Paul WB8TSL
On Mon, Mar 21, 2022 at 5:50 PM Bob kb8tq <kb...@n1k.org> wrote: > Hi > > More NetRS trivia: > > One of the features of the NetRS is that it will act as an NTP server. > It’s not the most modern device so I very much would not want to > serve a ton of clients off of one. It also has been a *long* time since > the OS was patched. If you are looking for “modern” features or > security patches, maybe not the best thing to use. It certainly isn’t > going to compete with the Leo Bodnar NTP in terms of size or > power consumption. You won’t get a steady stream of updates and > patches like you would on something cool from Meinberg. > > That said, for a “shop for a while” sub $150 sort of price, they would > be a reasonable deal. Not many packaged NTP products on eBay > that you “just plug in” and that run multi-band GPS. You would get > the frequency monitoring and RTK base station stuff “for free”. > > Can you / could you / might you upgrade the OS? Since there really > isn’t much info on what the hardware looks like, that could be > exciting. The cards are “locked down” (though not encrypted) as > received so even poking around to try this or that isn’t trivial. How > much was done (if anything) to keep the OS “out of the way” of the > GPS code …. who knows …. > > Fun !! > > Bob > > > > > On Mar 21, 2022, at 1:01 PM, John Ackermann N8UR <j...@febo.com> wrote: > > > > You can stream data out of the receiver via either TCP or serial port > without storing to disk, so that's probably the best bet to save CF wear > and tear. I'm not sure if it's more difficult to turn the > > > > But for now I'm doing as you suggest -- I have one "T00" format session > logging to disk in 24 hour files, with the "autodelete" function turned on > to delete oldest files first when the disk gets nearly full. > > > > However, I've been collecting data now for almost 4 months, and have > used 68.5 MB, with 770 MB still available, so I won't need to delete > anything for quite a long while. > > > > John > > ---- > > > > On 3/21/22 11:22, Skip Withrow wrote: > >> Hello Time-Nuts, > >> Seems like there has been a lot of interest in the NetRS lately > >> because of their availability at reasonable prices (sometimes). > >> They use a Compact Flash card to store the operating system and logged > >> data files. I'm not very knowledgeable about Linux, but I would guess > >> that there is no wear leveling implemented in this receiver. > >> So, when considering how best to use the data logging area it would > >> seem that instead of collecting some data, downloading it, deleting > >> file(s), and repeating the best strategy would be to collect data and > >> let the data logging area fill up before deleting (the files could be > >> read anytime). > >> This would minimize the number of writes to any one area of the CF > >> card I believe (except perhaps the directory structure). > >> However, even if you were deleting data often, you still may not be > >> able to get to the life of the CF card. The good news is that even if > >> a card does go bad you can reconstruct a new one from the image of > >> version 1.3-2 of the software that is floating around. I have tried > >> it and it works. > >> If there is better insight into the operation of this receiver, or > >> best practices strategy I'm all ears. > >> Regards, > >> Skip Withrow > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > send an email to time-nuts-le...@lists.febo.com > >> To unsubscribe, go to and follow the instructions there. > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe > send an email to time-nuts-le...@lists.febo.com > > To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send > an email to time-nuts-le...@lists.febo.com > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.