Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3OQM callsign genealogy
Currently held by KETCHAM, JAMES 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 N3OQM's current licensee, walking backwards.
- Ketcham, James SPAgranted 2025-05-23cancelled 2025-06-10
Successor callsigns
Callsigns held now by people who previously held N3OQM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3OQM, oldest first.
- KETCHAM, JAMES S PA1993-03-23 → cancelled 2005-03-24
- Ketcham, James S PA2025-06-10 active