Recently i’ve found some great codes from Tom Van Baak (Leapsecond) and use them as frequency dividers. You can find the *.hex and *.asm here I’ve burned some PIC 12F675 using a PIC programmer to have some CMOS TTL frequencies for various applications One of them was to use the M100, a great military Rubidium […]
I’ve tested the server into two different environments: LAN and WAN. I confirm the relatively small capacity of the Soekris to support 200-300 units connected to it for NTP UDP as ideal load without alter performances.Of course the major limits comes with Ethernet , T1 and line speed. We could never get nanoseconds over there […]
First operative test of the RB Stratum 1 Server Following Poul-Henning Kamp project to modify a 4501 router to build a Stratum 1 NTP server , I’ve decided to build my own using instead a Rubidium Frequency standard source of 10 MHz to clock the Elan processor inside the Soekris. It requires some hardware changes […]
What are we talking about? Today I’ll talk about this magnificent little device found on eBay : the Efratom M-100.First of all, what is a Rubidium Frequency Standard? It’s an atomic clock.Just in the 80-90 they were such an expansive units! The working mechanism is fascinating. It uses the hyperfine transition of electrons in rubidium-87 atoms […]
Delta² 