cutelolly / clock-tamer

Compact low-cost configurable clock generator with GPS sync option

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ClockTamer is a device manufactured by Fairwaves to provide a low-cost small-size configurable clock generator with GPS sync option. It was specifically designed to be used with USRP, but nothing prevents you from using it with other device of your choice given it has external clock input.

ClockTamer is not only Open-Source Software project, but is also an Open-Source Hardware (OSHW) project. All schematics, bill of materials and components placement are provided.

This project holds all source code you may need to work with ClockTamer and various instructions on how to use and hack it.

ClockTamer may be used as a reference clock, e.g. for:

  • GSM (e.g. with OpenBTS)
  • DAB
  • DVB
  • GPS
  • RFID
  • LTE
  • WiMAX
  • many others...

For detailed specifications and documentation please see the wiki.


All project's source code is licensed under LGPL license.

Schematics and their derivatives are licensed under Creative Commons Attribution-Share Alike 3.0 license (CC-BY-SA).

Host part of the project is licensed under New BSD license.

We're apologise for mixing numerous licenses in a single project, but we see this way as being the most appropriate.


Compact low-cost configurable clock generator with GPS sync option


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