Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4UMM callsign genealogy
Currently held by Pierce, Christopher M
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 KK4UMM's current licensee, walking backwards.
- Pierce, Christopher MFLgranted 2013-09-19cancelled 2013-10-22
Successor callsigns
Callsigns held now by people who previously held KK4UMM.
No current licensee on record previously held this callsign.