At the Hamvention in Xenia, OH I was fortunate enough to see W3ZM/8 make numerous contacts through
The batteries failed on Oscar 7 in 1981, however the spacecraft is able to run off solar panels. Making contact with Oscar 7 is quite remarkable. See more at: AO-7.
Watch how it's done!
Source: QRZ News
Link: W3ZM/8 Amateur Radio Satellite Demonstration