Timing ⁽¹¹⁾

The Symmetricom X72 is a very compact high quality Rb oscillator, I bought a broken one hoping the physics package wasn't broken.

The C-MAC STP 2373LF is a 2x2x1" OCXO used in e.g. the Epsilon EC2S GPS clocks. Since a number of these clocks were broken in obvious or subtle ways, I decided to reuse the OCXO's and other useful components from these.

The Furuno GT-88 is a GNSS timing receiver intended for precision timekeeping. These are my impressions after some testing, but before I've tried to build a full reference clock system based on it.

The Meinberg PZF180PEX is a fairly uncommon sight in northern Europe. It is a PCIe radio clock receiver for the German DCF77 long wave time signal, made by German company Meinberg.

This is a cute little clock intended for OEM precision timing, let's look at how it's built.

Some viewers may have noted some 7-segment clocks in the background of some pictures in prior entries. I decided to update this system for the 2020 holiday season, and built 10 new clocks to replace 3 old ones.

I bought some more 58534A-H01 receivers and found that these receivers were of the older type I had seen low resolution pictures of before.

On a whim I bought some pole mount GPS receivers. 

Being unable to find any real details on what's inside I mostly bought them blind, so I took some photos of the insides to help others out.

The Spectracom Epsilon Clock EC2S and similar devices are fairly high end GPS clocks/timing receivers.

I've spent a few days with one and I wrote a utility to program the device that is available for download.

I've designed a 3D printable solution for rack mounting Lucent RFTG-u receivers on cheap 2U shelves.

This page has some info on the MC349 VCXO, that has been available on eBay in large quantities at low cost.