John Totally agree on the power and ground. Good to know you like to take them apart if required.
On Sun, May 9, 2021 at 2:09 PM John Miller via time-nuts < [email protected]> wrote: > I take everything apart, so that much is a given - I just also like to > have as much original documentation as I can, especially if there are any > special initialization or configuration commands. Whatever I find I will > document for anyone else who gets one of these in the future. Generally > speaking once power and ground are found everything else more or less falls > in place. > > John > > > On May 9, 2021, at 10:48 AM, paul swed <[email protected]> wrote: > > > > Back to the problem for a minute. > > I have used some pctel antennas and they have been very good over the > > years. (Very good = works). The model number at least gives you a hint if > > RS 422 or 232. But if you can't find any further detail you are stuck > with > > one option. > > Open it up and look. Most of these antennas can be opened and then > > re-assembled. The hardest part is ensuring a good seal. > > With respect to what's inside it should be reasonably apparent. Ground, > > Power to some linear regulator, maybe a RS422 chip or 232 driver. > Expected > > leads for 422 nema and 1 pps so that would be 4 pins right there. > > So you would be able to get the unit going if your willing to dig in. Pun > > intended. > > Good luck and let us know what you find. > > Regards > > Paul > > WB8TSL > > > > On Sun, May 9, 2021 at 8:11 AM Poul-Henning Kamp <[email protected]> > wrote: > > > >> -------- > >> Mike Ingle writes: > >> > >>> Hi, in reading between the lines, are you saying that in practice, the > >>> tempco of twisted pair is worse than the tempco of coax? > >> > >> I seriously doubt it. The change in coppers conductivity will not make > >> that kind of difference in propagation time until the cables are > measured > >> in kilometers. > >> > >> I suspect the tempco comes from the RS-422 linedriver chip in the > antenna > >> or possibly from ceramic capacitors used to control its slew-rate. > >> > >> -- > >> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > >> [email protected] | TCP/IP since RFC 956 > >> FreeBSD committer | BSD since 4.3-tahoe > >> Never attribute to malice what can adequately be explained by > incompetence. > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] -- To unsubscribe > send > >> an email to [email protected] > >> To unsubscribe, go to and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- [email protected] -- To unsubscribe > send an email to [email protected] > > To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send > an email to [email protected] > To unsubscribe, go to and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
