Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AI4FD callsign genealogy
Currently held by Allen, David P
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 AI4FD's current licensee, walking backwards.
- Allen, David PKYgranted 2002-08-19cancelled 2004-04-20
Successor callsigns
Callsigns held now by people who previously held AI4FD.
- Allen, David PKYgranted 2009-03-10cancelled 2011-02-18