Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7DT callsign genealogy
Currently held by Keil, Allen R
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 AD7DT's current licensee, walking backwards.
- Keil, Allen RAZgranted 2001-09-04cancelled 2004-09-30
Successor callsigns
Callsigns held now by people who previously held AD7DT.
No current licensee on record previously held this callsign.