Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0STP callsign genealogy
Currently held by Ganzlin, Peter W
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 N0STP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N0STP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0STP, oldest first.
- PARKER, ALVAN A TX1995-02-09 → cancelled 2004-05-27
- Ganzlin, Peter W MN2017-08-01 active