Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD0FS callsign genealogy
Currently held by Harmon, Chris E
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 AD0FS's current licensee, walking backwards.
- Harmon, Chris EIAgranted 2013-09-12cancelled 2013-10-30
Successor callsigns
Callsigns held now by people who previously held AD0FS.
No current licensee on record previously held this callsign.