[App_rpt-users] RTCM Simulcast question

[David McGough]

Hi Joe,

While on the subject of the Si5351 chips, the application of converting
one reference clock to a secondary frequency is what they were designed
for. So, since you've already got a GPS reference, this -might- be an
inexpensive starting point...For this application, you obviously won't
need all the bells and whistles presented in this article! See:

http://www.knology.net/~gmarcus/Si5351/Si5351_VFO_QEX.pdf
http://www.knology.net/~gmarcus

Note that I would replace the Si5351 25MHz reference with a decent TCXO 
(available on ebay, etc.)....Note that I haven't used the Si5351 with an 
RTCM, there may be simpler/better ways???


73, David KB4FXC




On Mon, 6 Jun 2016, Joe Moskalski wrote:

> > It seems clear that in order for simulcast to work properly with the RTCM
> > I will need to clock the CPU to the GPSDO. Is there a device available to
> > give you the 9.6 mhz reference from the 10 mhz out from the GPSDO or does
> > anyone have a schematic available so that I can build them myself?
> >
> >
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon>
> Virus-free.
> www.avast.com
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link>
> <#DDB4FAA8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>