(Revised September 1980) CCWN 77:130-150* Re/@rences Petit, R. A ccw Frequency Standard. CCWN, 1976:77-8. Kelly. Universal Frequency Standard, Ham Radio, 1974, February, 40. McCaskey, A. The Coherent TEN-TEC:A Practical ccw Station Assembly. CCVrN 1975:24. Petit, R. 5.0-5.5 MHz Synthesizer. CCVIN, 1978. Woodson, C. CCWT-2 Transmitter. CCW-N, 1977:103-4. Maynard, Jim. HW-8 for ccw. CCW-N 1978:153-155. Acknowledgement Many of the ideas presented here are due to, or are based upon ideas of Ray Petit, W7GHM. It would be inaccurate to discuss ccw without mentioning him. This article has benefited considerably from critical comments and suggestions from Jim Maynard, K7KK, and Ray Petit, W7GHM. Boards for the PCF-3 are available from Ray Petit, W7GHM. *Due to photo typesetting, the revised pages have taken less paper pages.