Hello to the group. Just picked up a Kinemetric GPS-DC. Granted its an old unit etc. But interesting to try to get going. This has Kinemetrics only on the front panel. I am guessing its slightly newer than the one on TVBs leapsecond site. On the back it does have kinemetrics truetime. Thats why my guess is its slightly newer. It does appear there may be a bad CDU. (No idea what that means.) The Li battery was bad and starting to leak but no real damage. Pretty sure the dallas semiconductor battery backed clock and memory could be gone. That doesn't mean the system can't be started up though. Will guess manual entry of details may get it going. I was able to enter the correct lat/long/alt and it stays even after power cycles. But it does have the complete RF 1575 MHz preamp and down converter built in. Also can send and receive rs 232. But totally guessing at commands and not very good at it. Seems to be 9600 7 E 1 for communications. Any clues would be greatly appreciated Thank you in advance. Paul WB8TSL

The XL-DC manual says it has the same command set as the GPS-DC over RS-232. The manual for that seems to be available at many places. hld On 6/11/2023 6:56 AM, paul swed via time-nuts wrote: > Hello to the group. Just picked up a Kinemetric GPS-DC. Granted its an old > unit etc. But interesting to try to get going. This has Kinemetrics only on > the front panel. I am guessing its slightly newer than the one on TVBs > leapsecond site. On the back it does have kinemetrics truetime. Thats why > my guess is its slightly newer. > > It does appear there may be a bad CDU. (No idea what that means.) > The Li battery was bad and starting to leak but no real damage. Pretty sure > the dallas semiconductor battery backed clock and memory could be gone. > That doesn't mean the system can't be started up though. Will guess manual > entry of details may get it going. I was able to enter the correct > lat/long/alt and it stays even after power cycles. > > But it does have the complete RF 1575 MHz preamp and down converter built > in. Also can send and receive rs 232. But totally guessing at commands and > not very good at it. Seems to be 9600 7 E 1 for communications. > > Any clues would be greatly appreciated > Thank you in advance. > Paul > WB8TSL > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com -- Howard L. Davidson hld42@att.net

Howard I did indeed discover the correct rs232 connections and rates. That agrees with the XL-DC. But not much else lines up. Have discovered some codes. But they start with a T or C etc. Not the F as indicated in the manual of the xl-dc. Regards Paul WB8TSL On Mon, Jun 12, 2023 at 2:06 AM Howard Davidson via time-nuts < time-nuts@lists.febo.com> wrote: > The XL-DC manual says it has the same command set as the GPS-DC over > RS-232. The manual for that seems to be available at many places. > > > hld > > On 6/11/2023 6:56 AM, paul swed via time-nuts wrote: > > Hello to the group. Just picked up a Kinemetric GPS-DC. Granted its an > old > > unit etc. But interesting to try to get going. This has Kinemetrics only > on > > the front panel. I am guessing its slightly newer than the one on TVBs > > leapsecond site. On the back it does have kinemetrics truetime. Thats why > > my guess is its slightly newer. > > > > It does appear there may be a bad CDU. (No idea what that means.) > > The Li battery was bad and starting to leak but no real damage. Pretty > sure > > the dallas semiconductor battery backed clock and memory could be gone. > > That doesn't mean the system can't be started up though. Will guess > manual > > entry of details may get it going. I was able to enter the correct > > lat/long/alt and it stays even after power cycles. > > > > But it does have the complete RF 1575 MHz preamp and down converter built > > in. Also can send and receive rs 232. But totally guessing at commands > and > > not very good at it. Seems to be 9600 7 E 1 for communications. > > > > Any clues would be greatly appreciated > > Thank you in advance. > > Paul > > WB8TSL > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > > -- > Howard L. Davidson > hld42@att.net > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com >

I am beginning to believe that the GPS-DC I have may be a model 1 or 0. It has a single display. No sub display. A keypad and 3 black buttons under the single display time, status, position. Serial number 76. Anyone seen this unit? It looks like ebay 275352383003. Thanks Paul On Mon, Jun 12, 2023 at 9:15 AM paul swed <paulswedb@gmail.com> wrote: > Howard I did indeed discover the correct rs232 connections and rates. That > agrees with the XL-DC. But not much else lines up. > Have discovered some codes. But they start with a T or C etc. Not the F as > indicated in the manual of the xl-dc. > Regards > Paul > WB8TSL > > > On Mon, Jun 12, 2023 at 2:06 AM Howard Davidson via time-nuts < > time-nuts@lists.febo.com> wrote: > >> The XL-DC manual says it has the same command set as the GPS-DC over >> RS-232. The manual for that seems to be available at many places. >> >> >> hld >> >> On 6/11/2023 6:56 AM, paul swed via time-nuts wrote: >> > Hello to the group. Just picked up a Kinemetric GPS-DC. Granted its an >> old >> > unit etc. But interesting to try to get going. This has Kinemetrics >> only on >> > the front panel. I am guessing its slightly newer than the one on TVBs >> > leapsecond site. On the back it does have kinemetrics truetime. Thats >> why >> > my guess is its slightly newer. >> > >> > It does appear there may be a bad CDU. (No idea what that means.) >> > The Li battery was bad and starting to leak but no real damage. Pretty >> sure >> > the dallas semiconductor battery backed clock and memory could be gone. >> > That doesn't mean the system can't be started up though. Will guess >> manual >> > entry of details may get it going. I was able to enter the correct >> > lat/long/alt and it stays even after power cycles. >> > >> > But it does have the complete RF 1575 MHz preamp and down converter >> built >> > in. Also can send and receive rs 232. But totally guessing at commands >> and >> > not very good at it. Seems to be 9600 7 E 1 for communications. >> > >> > Any clues would be greatly appreciated >> > Thank you in advance. >> > Paul >> > WB8TSL >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@lists.febo.com >> > To unsubscribe send an email to time-nuts-leave@lists.febo.com >> >> -- >> Howard L. Davidson >> hld42@att.net >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe send an email to time-nuts-leave@lists.febo.com >> >