Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NN4B callsign genealogy
Currently held by HEATH, MICHAEL W
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 NN4B's current licensee, walking backwards.
- HEATH, MICHAEL WKYgranted 2006-11-21cancelled 2016-06-01
Successor callsigns
Callsigns held now by people who previously held NN4B.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NN4B, oldest first.
- HEATH, PEGGY A KY2005-09-13 → cancelled 2014-06-10
- HEATH, MICHAEL W KY2016-06-01 active