Re: [time-nuts] Difference between Oncore models

Thanks to all for the comments. I recently traded for another Z3801A that I was told didn't work. I don't know what is wrong with it, as I haven't had time to put it on the bench yet. I understand that the OCXO is putting out a decent 10 MHz, so perhaps it also has a bad Oncore. Joe Gray W5JG

Re: [time-nuts] Difference between Oncore models

> Le 16 mars 2016 à 12:03, Joseph Gray a écrit : > > I understand that the Oncore GPS in the Lucent units is a newer module > that tracks eight satellites, vs the older Oncore in the Z3801A that > only tracks six satellites. > > I decided to do a re-survey with my Z3801A that

Re: [time-nuts] Difference between Oncore models

Could just be that the older Encore requires a hotter signal. Try without the 4-port splitter, those do introduce some attenuation. But then if you have an amplifier that's not it. On Wed, Mar 16, 2016 at 4:03 AM, Joseph Gray wrote: > I understand that the Oncore GPS in the

Re: [time-nuts] Difference between Oncore models

Hi A lot of “dead” Z3801’s have a blown fuse link input on the power supply. I’d check that first. Bob > On Mar 16, 2016, at 9:56 PM, Joseph Gray wrote: > > Thanks to all for the comments. I recently traded for another Z3801A > that I was told didn't work. I don't know

Re: [time-nuts] Difference between Oncore models

Hi > On Mar 16, 2016, at 7:03 AM, Joseph Gray wrote: > > I understand that the Oncore GPS in the Lucent units is a newer module > that tracks eight satellites, vs the older Oncore in the Z3801A that > only tracks six satellites. > > I decided to do a re-survey with my Z3801A

[time-nuts] Difference between Oncore models

When an old electronic gizmo starts failing across multiple units, the culprit is almost always failing electrolytic capacitors. Check your GPS board for electrolytic caps and replace them. There could be some other component that is susceptible to an age-related failure mode, but caps are

[time-nuts] Difference between Oncore models

I understand that the Oncore GPS in the Lucent units is a newer module that tracks eight satellites, vs the older Oncore in the Z3801A that only tracks six satellites. I decided to do a re-survey with my Z3801A that has been in holdover for some time, just as a test. Watching the status screens

Re: [time-nuts] Difference between Oncore models

Joe The newer Motorola VP-Oncore receivers are known to be an improved design over the original Oncores that came with the Z3801A's . I have recently done some side by side comparison's with two z3801A's on the same antenna the newer Vp-Oncore's ran SS numbers 15-30 points higher on the