Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4HFE callsign genealogy
Currently held by KIRLIN, WILLIAM F
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 K4HFE's current licensee, walking backwards.
- Kirlin, Joshua STXgranted 2018-10-18cancelled 2018-11-14
Successor callsigns
Callsigns held now by people who previously held K4HFE.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4HFE, oldest first.
- KIRLIN, WILLIAM F VA2015-05-21 → cancelled 2016-11-24
- Kirlin, Joshua S TX2018-11-14 active