Hi. Does anyone tell me if i cam be possible to implement the SGP4 or the PLAN13 algorithm on a PIC? I have been thinking on a PIC18F or dsPIC, but I think I'll need so much RAM to do this. Any idea? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist