Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4FRO callsign genealogy
Currently held by FROHWITTER, JOSEPH D
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 W4FRO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W4FRO.
- FROHWITTER, JOSEPH DNCgranted 2004-07-16cancelled 2012-01-31
All historical holders
Every license row we've seen with the callsign W4FRO, oldest first.
- FROHWITTER, JOSEPH D NC2004-07-16 → cancelled 2011-08-25
- Froeming, Tyler J TN2022-03-29 active