Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4JBM callsign genealogy
Currently held by McClanahan, James B
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 W4JBM's current licensee, walking backwards.
- McClanahan, James BGAgranted 2001-04-05cancelled 2001-05-18
Successor callsigns
Callsigns held now by people who previously held W4JBM.
No current licensee on record previously held this callsign.