Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB4MEO callsign genealogy
Currently held by HAMMACK, JEFFREY T
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 WB4MEO's current licensee, walking backwards.
- HAMMACK, JEFFREY TALgranted 1999-01-18cancelled 2006-01-07
Successor callsigns
Callsigns held now by people who previously held WB4MEO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB4MEO, oldest first.
- Hammack, William J AL2004-08-17 → cancelled 2004-09-08
- HAMMACK, JEFFREY T AL2026-01-14 active