Satgen1 Mir's Changing Orbit. Are you having difficulty finding Mir ? The crew presently in Mir will not be relieved on station. So they are moving Mir up to a safe parking height, comensurate with the present Solar cycle peak = high drag on orbiter, of about 400kms. Kep Elements are out of date before printing in this situation . So to find Mir just listen roughly 40 minutes later each successive day. If you want to talk to Mir on VHF, you must do it soon. Very shortly the crew will start shuting down and preserving the station machinery, and they wont have time for AR. You will be able to recognise this shut down as the noise background to Mir Comms gradually loses machinery noise. When they leave Mir may still be trackable via the 166.123 MHz telemetry link. 73 de GM4IHJ 19 April 89.