Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN4ACJ callsign genealogy
Currently held by Zapf, Michele L
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 KN4ACJ's current licensee, walking backwards.
- Zapf, Michele LTNgranted 2020-11-06cancelled 2020-11-28
Successor callsigns
Callsigns held now by people who previously held KN4ACJ.
- Zapf, Michele LTNgranted 2020-11-06cancelled 2020-11-28
All historical holders
Every license row we've seen with the callsign KN4ACJ, oldest first.
- Zapf, Michele L TN2017-01-13 → cancelled 2020-11-06
- Zapf, Michele L TN2020-11-28 active