[time-nuts] Re: Spectracom 8143 GPS Disciplined Osc

[Shawn]

Yes, the gear is Two Way Radio but using T1 serial data technology.
-- 
Sincerely,

Shawn Tayler

On Sat, 2023-01-14 at 11:29 -0500, S McGrath via time-nuts wrote:
> Its being used to synchronize telco gear so the 1.544 frequency(T1
> clock)
>  is correct for application.   Who misses those giant V.35 serial
> connectors (assuming unit did not have integrated CSU/DSU)
> 
> On Sat, Jan 14, 2023 at 11:24 AM paul swed via time-nuts <
> time-nuts at lists.febo.com> wrote:
> 
> > Did you do a search online? The manual is readily available.
> > Should be a useful unit IF you can change the 1.544 MHz to
> > something useful
> > like 5 or 10 MHz.
> > Did not look at the schematic to see how they make the 1.544 MHz.
> > Thats a
> > telco clock frequency.
> > Regards
> > Paul
> > WB8TSL
> > 
> > On Fri, Jan 13, 2023 at 7:33 PM Shawn via time-nuts <
> > time-nuts at lists.febo.com> wrote:
> > 
> > > Hi Paul,
> > > 
> > > Yes, my mistake, It was the 8195 Oscillator with the 8143
> > > switch.  I
> > > should've referred to the Oscillator number.
> > > 
> > > I'd like to re-ask the same re. the 8195.  These units have 10MHz
> > > with
> > > 1.544 and 1pps outputs.
> > > 
> > > --
> > > Sincerely,
> > > 
> > > Shawn Tayler
> > > 
> > > On Fri, 2023-01-13 at 10:43 -0500, paul swed via time-nuts wrote:
> > > > Shawn I don't think the 8143 is an oscillator or pair.
> > > > Its a master/backup switch and distribution amplifier.
> > > > Nice unit. One on the auction site with good pix.
> > > > Believe you should be able to find a manual on it.
> > > > Spectracom manuals had been available online. Maybe not
> > > > anymore.
> > > > Good luck
> > > > Paul
> > > > WB8TSL
> > > > 
> > > > On Fri, Jan 13, 2023 at 10:05 AM Shawn via time-nuts <
> > > > time-nuts at lists.febo.com> wrote:
> > > > 
> > > > > Hey Guys,
> > > > > 
> > > > > I may have do a cleanup and refurb on some fairly old
> > > > > Spectracom
> > > > > 8143
> > > > > Disciplined Oscillators.  Are there some good resources
> > > > > and/or
> > > > > places
> > > > > to look for proper Care and Feeding type information?
> > > > > 
> > > > > They are being used in a communications system to synchronize
> > > > > Simulcast
> > > > > Communications as well as an older TDM style voice switch. 
> > > > > There
> > > > > are
> > > > > two in an A/B backup configuration.
> > > > > --
> > > > > Sincerely,
> > > > > 
> > > > > Shawn Tayler
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