Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1OBJ callsign genealogy
Currently held by WYSOPAL, CHRISTOPHER 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 N1OBJ's current licensee, walking backwards.
- Wysopal, Christopher JMAgranted 2011-08-31cancelled 2011-09-24
Successor callsigns
Callsigns held now by people who previously held N1OBJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1OBJ, oldest first.
- WYSOPAL, CHRISTOPHER J MA1993-01-05 → cancelled 2005-01-06
- WYSOPAL, CHRISTOPHER J MA2021-07-21 active