Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD4TP callsign genealogy
Currently held by UBL, MICHAEL 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 AD4TP's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held AD4TP.
- UBL, MICHAEL PFLgranted 1999-07-27cancelled 2003-03-11