Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA7PHO callsign genealogy
Currently held by OLSON, FREDERICK H
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 WA7PHO's current licensee, walking backwards.
- Olson, Frederick HWAgranted 2007-04-09cancelled 2007-05-22
Successor callsigns
Callsigns held now by people who previously held WA7PHO.
No current licensee on record previously held this callsign.