Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9JAH callsign genealogy
Currently held by Halmich, Jeffrey A
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 W9JAH's current licensee, walking backwards.
- Halmich, Jeffrey AFLgranted 2014-05-29cancelled 2017-01-21
Successor callsigns
Callsigns held now by people who previously held W9JAH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9JAH, oldest first.
- BARRETT, GLADWYN L FL1991-09-03 → cancelled 2003-09-04
- Halmich, Jeffrey A FL2017-01-21 active