[ntp:questions] Re: What is a good, cheap, Linux-supported hardware clock for a NTP-server? Any recommendations?

Heiko Gerstung heiko.gerstung_removeme_ at meinberg.de
Mon Oct 25 06:31:14 UTC 2004

Hello Evert,

it can be problematic to receive a reliable DCF77 signal in Norway. In 
fact we have a few DCF77 customers there, but as the other gurus wrote, 
it heavily depends on your location. The few DCF77 based receivers in 
Norway are PZF models (pseudo random sequence), which synchronize with 
the DCF77 signal only during the night, when a lot of disturbance and 
radio noise is lower compared with the day.

I would recommend a GPS receiver, you could choose an internal PCI card 
like the GPS169PCI, which comes with a Linux kernel driver (for 2.2, 2.4 
and 2.6 kernels) and works flawlessy with NTP.

Kind regards,

Evert Meulie wrote:
> Hi everyone!
> My (public) NTP server current 'leeches' its time from other servers 
> higher up the tree. I'd like to get my own hardware unit now.
> The 2 (affordable) options are DCF77 & GPS, right? Who can recommend 
> something?
> It doesn't really matter to me whether it's a serial or USB unit...
> I'm based in Norway.
> Regards,
>     Evert

Meinberg radio clocks: 25 years of accurate time worldwide

Meinberg Radio Clocks

Stand alone ntp time servers and radio clocks based on GPS, DCF77 and 
IRIG. Rackmount and desktop versions and PCI slot cards.

More information about the questions mailing list