[time-nuts] Lucent boxes

Chris Waldrup kd4pbj at gmail.com
Mon Jul 18 23:14:04 EDT 2016

Thanks Bill. 
I can use the RTFGm-XO by itself though, right?
I found a site with mods to extract the 10 MHz Signal rather than use the 15 MHz. 


> On Jul 18, 2016, at 20:54, Bill Hawkins <bill.iaxs at pobox.com> wrote:
> No, it does not work, unless you can reprogram the microprocessors. I
> speak from experience.
> The older boxes used a GPS receiver that reported up to 6 satellites.
> The newer boxes report 8.
> The messages that report satellite health have different lengths.
> If the micro reports an error in the message, the box goes into
> "flywheel" mode (aka holdover).
> The oscillators are undisciplined, wasting all of that GPS info.
> An external PPS signal, if you could couple it in, would be ignored
> because the micro won't even try to use it.
> Bill Hawkins
> Note: I can't reprogram micros with unknown code.
> -----Original Message-----
> From: Douglas Baker
> Sent: Monday, July 18, 2016 4:39 PM
> Chris,
> The RFTGm ("m" for miniature even though still a large box) is a later
> version of the RFTG line.  The XO unit houses the GPS receiver which is
> essential for disciplining.  Both boxes operate at 24 VDC and there is
> an interface cable drawing on line at KO4BB's web site. Never tried to
> hook them up together, but it might work.  Maybe others here may know.
> Good luck with it.
> 73's Doug
> On Jul 18, 2016 12:52 PM, "Chris Waldrup" <kd4pbj at gmail.com> wrote:
> ----- snip ----
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