Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7OIL callsign genealogy
Currently held by PETERSEN, DANIEL N
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 W7OIL's current licensee, walking backwards.
- PETERSEN, DANIEL NWAgranted 1998-03-09cancelled 2003-08-29
Successor callsigns
Callsigns held now by people who previously held W7OIL.
No current licensee on record previously held this callsign.