SILENT KEY

[IK0ZCW]

Dr. Thomas A. Clark, K3IO passed away on 28 September aged 82. A long time pioneer involved with amateur satellite development, he was Director Emeritus and President Emeritus of AMSAT. He was a leader in the development of the AX.25 packet radio network in the 1980s, and his pioneering work on Software Defined Radio led to the development of the Software Defined Transponder (SDX) for satellite work. In 2001 he was inducted into the CQ Hall of Fame, and in 2016 the ARRL honoured him with its President's Award to recognize his 60 years of advancing amateur radio technology.