Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W8TTY callsign genealogy
Currently held by AMSTER, ALLAN M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W8TTY's current licensee, walking backwards.
- PRUSZYNSKI, STEPHEN AFLgranted 2014-01-03cancelled 2019-12-03
Successor callsigns
Callsigns held now by people who previously held W8TTY.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W8TTY, oldest first.
- KOHN, ARTHUR P OH1994-05-31 → cancelled 2001-07-04
- AMSTER, ALLAN M OH2006-01-10 → cancelled 2018-01-11
- PRUSZYNSKI, STEPHEN A FL2019-12-03 active