Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N1BBL callsign genealogy
Currently held by SHELDON JR, JOSEPH M
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 N1BBL's current licensee, walking backwards.
- SHELDON JR, JOSEPH MCTgranted 2021-01-29cancelled 2021-05-22
Successor callsigns
Callsigns held now by people who previously held N1BBL.
- LOJKO, JOHN BMAgranted 2000-08-22cancelled 2010-04-07