Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1TTZ callsign genealogy
Currently held by BERLER, ROBERT M
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 K1TTZ's current licensee, walking backwards.
- Klinesmith, Jill DALgranted 2023-12-06cancelled 2023-12-27
Successor callsigns
Callsigns held now by people who previously held K1TTZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1TTZ, oldest first.
- BERLER, ROBERT M CT1998-01-23 → cancelled 2010-01-26
- Klinesmith, Jill D AL2023-12-27 active