Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4HRS callsign genealogy
Currently held by MONAGHAN, CRAIG H
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 KD4HRS's current licensee, walking backwards.
- Monaghan, Craig HFLgranted 2018-06-19cancelled 2018-07-10
Successor callsigns
Callsigns held now by people who previously held KD4HRS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4HRS, oldest first.
- MONAGHAN, CRAIG H FL1991-12-10 → cancelled 2003-12-11
- Monaghan, Craig H FL2018-07-10 active