Confidence: Medium · Source: FCC ULS · As of 2026-09-15
N8GPM callsign genealogy
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 N8GPM's current licensee, walking backwards.
- HELTUNEN, THOMAS JMIgranted 1997-10-15cancelled 2004-01-23
Successor callsigns
Callsigns held now by people who previously held N8GPM.
- HELTUNEN, THOMAS JMIgranted 1997-10-15cancelled 2004-01-23
All historical holders
Every license row we've seen with the callsign N8GPM, oldest first.
- HELTUNEN, THOMAS J MI2014-01-11 → cancelled 2026-03-07
- —— → cancelled 1997-10-15