OSCAR 16 (also: AO -16, Microsat -1, PACSAT ) is an American amateur radio satellite.

The cube- shaped 13 kg satellite was designed and built by amateur radio operators AMSAT and launched on 22 January 1990 as a secondary payload, together with the Earth observation satellite SPOT 2 by an Ariane 4 from the Guiana Space Centre in Kourou.

The satellite has an AX.25 BBS with uplinks in the 2 meter band and downlinks in the 70 -centimeter band and 13 -centimeter band. The COSPAR designation of OSCAR 16 is 1990 - 005D.

After a hardware failure of the Satellite 2008 for telephony operation configured (uplink in FM downlink in DSB).