Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4MMH callsign genealogy
Currently held by DeHaven, Thad
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 KK4MMH's current licensee, walking backwards.
- DeHaven, Thad RVAgranted 2026-01-29cancelled 2026-02-20
Successor callsigns
Callsigns held now by people who previously held KK4MMH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KK4MMH, oldest first.
- DeHaven, Thad R VA2012-11-07 → cancelled 2024-12-04
- DeHaven, Thad VA2026-02-20 active