Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5FOS callsign genealogy
Currently held by Fosburgh, Asa M
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 W5FOS's current licensee, walking backwards.
- Fosburgh, Asa MTXgranted 2015-05-07cancelled 2015-07-31
Successor callsigns
Callsigns held now by people who previously held W5FOS.
No current licensee on record previously held this callsign.