Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4JFA callsign genealogy
Currently held by Appuhn, John F
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 WA4JFA's current licensee, walking backwards.
- Appuhn, John FALgranted 2018-04-20cancelled 2018-05-11
Successor callsigns
Callsigns held now by people who previously held WA4JFA.
- Appuhn, John FALgranted 2018-06-01