Top bottom and side views

The unit is supported by insulation in a 55mm square 30mm deep box



The OCXO PCB – Gold is attached to the heater plate machined as a one piece block.

The block is heated by the TO220 transistor, the thermistor for temperature control

and crystal are mounted into the block.


The whole unit is thermally insulated and contained in a tin plate box.


It is recommended to fine tune to the required frequency by external potentiometer

connected to the internal varicap diodes or connect to a PLL system.




Latest 2013 OCXO build information by clicking here


For more details contact G8ACE at


kits (at) dsl (dot) pipex (dot) com


Correct to proper email format and place only the word OCXO in the Subject to avoid my spam delete programme

Last update January 2013