Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4FOZ callsign genealogy
Currently held by FREDERICK, ARTHUR E
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 W4FOZ's current licensee, walking backwards.
- Dill, Jeffrey ASCgranted 2019-04-22cancelled 2019-05-14
Successor callsigns
Callsigns held now by people who previously held W4FOZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4FOZ, oldest first.
- FREDERICK, ARTHUR E TN1989-10-10 → cancelled 2001-10-11
- Dill, Jeffrey A SC2019-05-14 active