[time-nuts] u-blox timing modules

[Scott Stobbe]

The LEA-M8F is a complete GPSDO in module, the TCXO is EFC steered, no
sawtooth needed.

On Wed, Dec 21, 2016 at 8:30 PM, Bob Camp <kb8tq at n1k.org> wrote:

> Hi
>
> Ummm…. because you need a 30.72 MHz reference in a 4G base station rather
> than the
> TCXO that normally is in the uBlox modules. You can then “carry” the
> sawtooth into the
> SDR part of the basestation without a lot of muss and fuss.
>
> Bob
>
> > On Dec 21, 2016, at 5:48 PM, Bob Stewart <bob at evoria.net> wrote:
> >
> > Hi John,
> > Could you tell me why one would use choose an LEA-M8F over an LEA-M8T?
> > Bob - AE6RV
> >  -----------------------------------------------------------------
> > AE6RV.com
> >
> > GFS GPSDO list:
> > groups.yahoo.com/neo/groups/GFS-GPSDOs/info
> >
> >      From: John Haine <john.haine at haine-online.net>
> > To: time-nuts at febo.com
> > Sent: Wednesday, December 21, 2016 11:34 AM
> > Subject: [time-nuts] u-blox timing modules
> >
> > It's worth noting, in case people don't know, that u-blox have a
> > specific chip & module (the latter being the LEA-M8F) for precision
> > timing, developed for the LTE (4G) base station market. This disciplines
> > a low phase noise 30.72 MHz reference to received satellite signals,
> > GPS/GLONASS/BeiDou.  (30.72 MHz is the standard LTE sampling rate.)
> >
> > John.
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