Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KE4HDO callsign genealogy
Currently held by Kalicki, Adam J
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 KE4HDO's current licensee, walking backwards.
- Kalicki, Adam JFLgranted 2021-10-18cancelled 2021-11-06
Successor callsigns
Callsigns held now by people who previously held KE4HDO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KE4HDO, oldest first.
- BRANNEN, JOHN M FL2003-07-17 → cancelled 2015-10-14
- Kalicki, Adam J FL2021-11-06 active