Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB4AM callsign genealogy
Currently held by SCHNUCK, ROBERT Q
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 AB4AM's current licensee, walking backwards.
- TANNER III, ROBERT EGAgranted 2014-06-17cancelled 2015-04-07
Successor callsigns
Callsigns held now by people who previously held AB4AM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB4AM, oldest first.
- SCHNUCK, ROBERT Q FL1996-11-19 → cancelled 2008-11-20
- TANNER III, ROBERT E GA2025-03-25 active