In searching my paper files, I found three manuals which may be of interest: 1. 962 Complete Manual 2. Model 206-A Crystal Calibrator 3. Model 224 CW Filter (Audio Filter) http://www.dj0ip.de/ten-tec-stuff/ The 224 seems very similar to the Modal 208 that Tim was searching for. 73, Rick, DJ0IP (Nr. Frankfurt, Germany) May the Sunspots be with us!