Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N3RUD callsign genealogy
Currently held by Ruddy, John
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 N3RUD's current licensee, walking backwards.
- Ruddy, JohnPAgranted 2021-08-06cancelled 2021-08-27
Successor callsigns
Callsigns held now by people who previously held N3RUD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3RUD, oldest first.
- MARKLE JR, ROBERT S PA1994-04-05 → cancelled 2006-04-06
- Ruddy, John PA2021-08-27 active