Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1EOF callsign genealogy
Currently held by TITTERINGTON, JOHN
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 W1EOF's current licensee, walking backwards.
- TITTERINGTON, MARK ERIgranted 1990-04-17cancelled 2000-04-17
Successor callsigns
Callsigns held now by people who previously held W1EOF.
- TITTERINGTON, MARK ECTgranted 2000-04-17cancelled 2001-05-07
All historical holders
Every license row we've seen with the callsign W1EOF, oldest first.
- TITTERINGTON, JOHN RI1996-02-12 → cancelled 1999-03-10
- TITTERINGTON, MARK E RI2020-03-27 active