[time-nuts] Re: ublox gnss receiver data

[Luiz Paulo Damaceno]

Hi Carsten,

I'm bypassing the TCXO because I want to make mobile time transfers with a
low cost receiver too. So, for that, I've just removed the TCXO with hot
air (with care with other components) and synthesized its frequency
(49.58MHz) with an SRS SG384 synthesizer. Any synthesizer that can provide
this frequency and at least -5dBm of amplitude may work well. The
synthesizer is benign fed by a 5071 Cs clock.

Kind regards,

Luiz

Em seg., 19 de set. de 2022 Ã s 16:06, Carsten Andrich via time-nuts <
time-nuts at lists.febo.com> escreveu:

> On 17.09.22 04:48, Luiz Paulo Damaceno via time-nuts wrote:
> > This receiver is being
> > feed with external 49.58 MHz coming from a synthesizer that is locked to
> > Symmetricom's 5071A cesium frequency standard since we've removed its
> TCXO
> > to make the time transfer tests
>
> Hi Luiz,
>
> could you elaborate on why and how you're bypassing the TCXO? I'm
> planning to utilize the ZED-F9T for mobile time transfer and have
> already heard that its TCXO is the biggest cause of short-term
> instability when moving the receiver.
>
> Thanks and best regards,
> Carsten
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