Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4MGB callsign genealogy
Currently held by CUNIFF SR, DONALD 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 KD4MGB's current licensee, walking backwards.
- Sweet, Daniel PALgranted 2016-05-18cancelled 2016-06-07
Successor callsigns
Callsigns held now by people who previously held KD4MGB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4MGB, oldest first.
- CUNIFF SR, DONALD F FL1992-03-31 → cancelled 2004-04-01
- Sweet, Daniel P AL2026-05-12 active