Several people took me to task for posting a large attachment. I forgot that it is a problem in some parts of the world. To those who were offended please accept my apology. Furthermore I was wrong in saying that the Nova display is identical to Oscar Locator. At first glance they look similar. The difference is that the edge of the Nova display is your local horizon. The Oscar Locator was based on a world map projection centered on the North Pole. Part of its setup was a 'squashed circle', called a spiderweb, which was centered on your location and showed your horizon. I did get a couple of requests from newer members who were interested in the history of these things. I do think that even now it makes a nice starting point when explaining sats to someone new, even though they will quickly transition to a computer program. Full details are to be found in the Satellite Experimenter's Handbook, first and second editions. The inside back cover has the map and an Appendix explains it all else in Marty's usual clear style. 73, ron w8gus.