Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DIN callsign genealogy
Currently held by ZIGLINSKI, JOSEPH H
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 W4DIN's current licensee, walking backwards.
- SPICKARD, DAVID TTNgranted 2017-11-20cancelled 2019-12-07
Successor callsigns
Callsigns held now by people who previously held W4DIN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4DIN, oldest first.
- ZIGLINSKI, JOSEPH H IL1998-05-14 → cancelled 2010-05-15
- SPICKARD, DAVID T TN2019-12-07 active