Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4YW callsign genealogy
Currently held by Routhier, Paul K
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 AI4YW's current licensee, walking backwards.
- Routhier, Paul KVAgranted 2004-07-27cancelled 2007-06-04
Successor callsigns
Callsigns held now by people who previously held AI4YW.
- Routhier, Paul KARgranted 2024-04-30