Hi all, I forgot to post some pictures of the assembly. The OCXO for now is mounted on the backside of the board. You can see the pins coming out on the front below the GPS board. The SMA connector on the right connects the GPS antenna. http://www.needles.de/HPSDR/GPSDO-1.JPG http://www.needles.de/HPSDR/GPSDO-2.JPG Enjoy 73 Horst DL6KBF 1192904281.0