Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1U callsign genealogy
Currently held by Retired Employees Of The Telephone Company
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 AB1U's current licensee, walking backwards.
- KG6TCZcancelledRetired Employees Of The Telephone CompanyCAgranted 2003-11-26cancelled 2004-01-27
Successor callsigns
Callsigns held now by people who previously held AB1U.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB1U, oldest first.
- Retired Employees Of The Telephone Company CA2025-04-15 active
- —— → cancelled 1998-11-18