Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4KBL callsign genealogy
Currently held by CLEMMER, CAROLYN 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 N4KBL's current licensee, walking backwards.
- INFINGER, THOMAS FSCgranted 2013-02-11cancelled 2013-03-12
Successor callsigns
Callsigns held now by people who previously held N4KBL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4KBL, oldest first.
- CLEMMER, CAROLYN H NC1994-08-19 → cancelled 2006-08-22
- INFINGER mr, THOMAS F SC2023-12-23 active