Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6PTM callsign genealogy
Currently held by Montrym, John S
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 W6PTM's current licensee, walking backwards.
- Montrym, John SCAgranted 2018-04-24cancelled 2018-05-22
Successor callsigns
Callsigns held now by people who previously held W6PTM.
No current licensee on record previously held this callsign.