Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4AMM callsign genealogy
Currently held by Maguire, John P
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 K4AMM's current licensee, walking backwards.
- Maguire, John PGAgranted 2002-10-10cancelled 2002-11-05
Successor callsigns
Callsigns held now by people who previously held K4AMM.
No current licensee on record previously held this callsign.