Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4KMB callsign genealogy
Currently held by BENJAMIN, JEFFERY E
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 W4KMB's current licensee, walking backwards.
- Bickford, Kenneth MFLgranted 2021-07-16cancelled 2021-08-03
Successor callsigns
Callsigns held now by people who previously held W4KMB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4KMB, oldest first.
- BENJAMIN, JEFFERY E TN2009-09-26 → cancelled 2021-07-01
- Bickford, Kenneth M FL2021-08-03 active