Itamsat (Italian Amateur Satellite), IO 26 (Italy OSCAR 26) is a microsatellite built by AMSAT IT and has a mission to store and forward amateur radio messages like PACSAT (AO-16) and LUSAT (LO-19).
The satellite is based on the AMSAT-NA Microsat bus. It carried a Mode JD (145 to 435 MHz) Digital Transponder using the 1200 bps AX.25 protocol store-and-forward PACSAT Protocol Suite communications system and is mostly identical to PACSAT and LUSAT.
Itamsat was launched on 26 September 1993 by an Ariane-40 H10 rocket together with SPOT 3 and a cluster of small satellites consisting of Stella, Healthsat 2, Kitsat 2, Eyesat 1 and PoSAT 1.