Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7EFN callsign genealogy
Currently held by HAAKE, LOUIS 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 W7EFN's current licensee, walking backwards.
- Perez, JamesAZgranted 2009-11-10cancelled 2010-11-05
Successor callsigns
Callsigns held now by people who previously held W7EFN.
- HAAKE, LOUIS JWAgranted 2002-08-24cancelled 2008-10-18
All historical holders
Every license row we've seen with the callsign W7EFN, oldest first.
- HAAKE, LOUIS J WA2002-03-28 → cancelled 2002-08-24
- Perez Mr, James CA2010-11-05 → cancelled 2022-11-08