Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WB3IYU callsign genealogy
Currently held by MC CARL, FRED J
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 WB3IYU's current licensee, walking backwards.
- Ifft, Jeffrey ROHgranted 2008-09-25cancelled 2008-11-07
Successor callsigns
Callsigns held now by people who previously held WB3IYU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB3IYU, oldest first.
- MC CARL, FRED J PA2005-09-09 → cancelled 1997-07-16
- Ifft, Jeffrey R OH2018-09-05 active