Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5JKH callsign genealogy
Currently held by Halapin, Jeffrey K
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 W5JKH's current licensee, walking backwards.
- Halapin, Jeffrey KSDgranted 2026-07-28cancelled 2026-08-15
Successor callsigns
Callsigns held now by people who previously held W5JKH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5JKH, oldest first.
- HALAPIN, JEFFREY K PA2004-05-04 → cancelled 2016-05-05
- Halapin, Jeffrey K SD2026-08-15 active