Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7JOB callsign genealogy
Currently held by O'Brien, John P
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 K7JOB's current licensee, walking backwards.
- O'Brien, John PWAgranted 2009-09-10cancelled 2010-04-20
Successor callsigns
Callsigns held now by people who previously held K7JOB.
No current licensee on record previously held this callsign.