Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF4DNL callsign genealogy
Currently held by BOLL, ALAN 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 KF4DNL's current licensee, walking backwards.
- KE4KJZno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF4DNL.
- BOLL, ALAN JFLgranted 2018-10-09