Tom has been inspiring me since I was a high school kid the early 80s ... I remember typing his tracking program published in Orbit magazine into my TI-99/4A computer and storing it on cassette tapes!
I also remember listening to him on the old AMSAT Launch Information Network ... back then we had to get live information on the status of a launch via an HF net on 20 or 80 meters.
Most recently Tom was very generous with his time at the 2019 AMSAT Symposium -- we were musing over an interferometer design so that Amateurs could do their own orbit determination independent of any government or commercial operation.
de KM1P Joe
This is sad news indeed. What a loss to AMSAT!
Ken Ernandes, N2WWD
It is a terribly sad duty for me to tell you that our dear friend, peer and colleague, Tom Clark passed away.
I have already agreed with AMSAT managment to put together a memorial talk for the AMSAT meeting and extended effort for the journal and online.
I heartbroken to lose my friend.
Dr. Robert W McGwier, Ph.D. Adjunct Faculty, Virginia Tech ARDC Member of Board N4HY: ARRL, TAPR, AMSAT, EARC Sky: AAVSO, SkyHub, Auburn AS, Skyscrapers