Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7TRB callsign genealogy
Currently held by AIGNER, MARY K
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 KC7TRB's current licensee, walking backwards.
- Rollman, Michael ENVgranted 2013-11-21cancelled 2013-12-10
Successor callsigns
Callsigns held now by people who previously held KC7TRB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7TRB, oldest first.
- AIGNER, MARY K WA1996-12-16 → cancelled 2008-12-17
- Rollman, Michael E NV2023-10-17 active