Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB0TM callsign genealogy
Currently held by McGregor, Andrew B
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 AB0TM's current licensee, walking backwards.
- McGregor, Andrew BCOgranted 2001-12-27cancelled 2002-01-15
Successor callsigns
Callsigns held now by people who previously held AB0TM.
- McGregor, Andrew BCOgranted 2022-11-16