Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3TSH callsign genealogy
Currently held by HALTERMAN SR, ALEXANDER J
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 N3TSH's current licensee, walking backwards.
- Stevermer, Nickolas GMNgranted 2023-12-01cancelled 2024-08-24
Successor callsigns
Callsigns held now by people who previously held N3TSH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3TSH, oldest first.
- HALTERMAN SR, ALEXANDER J PA1994-11-01 → cancelled 2005-10-06
- Stevermer, Nickolas G MN2024-08-24 active