Confidence: Medium · Source: FCC ULS · As of 2026-10-24
KD3ZER callsign genealogy
Currently held by Rohlfing, Charles
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 KD3ZER's current licensee, walking backwards.
- Rohlfing, CharlesMDgranted 2026-08-27cancelled 2026-09-22
Successor callsigns
Callsigns held now by people who previously held KD3ZER.
No current licensee on record previously held this callsign.