Confidence: Medium · Source: FCC ULS · As of 2026-10-28
KF4HAL callsign genealogy
Currently held by CRUM, JEFFREY D
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 KF4HAL's current licensee, walking backwards.
- Flanagan, HallieFLgranted 2026-10-06cancelled 2026-10-24
Successor callsigns
Callsigns held now by people who previously held KF4HAL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF4HAL, oldest first.
- CRUM, JEFFREY D TN2005-11-29 → cancelled 2018-02-23
- Flanagan, Hallie N FL2026-10-24 active