Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4JMZ callsign genealogy
Currently held by PARRIS JR, CHARLES W
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 K4JMZ's current licensee, walking backwards.
- ZAJAC, JOSEPH MNCgranted 2021-06-09cancelled 2021-06-29
Successor callsigns
Callsigns held now by people who previously held K4JMZ.
- PARRIS SR, CHARLES WGAgranted 1998-03-18cancelled 2010-03-19
All historical holders
Every license row we've seen with the callsign K4JMZ, oldest first.
- PARRIS JR, CHARLES W GA1998-12-30 → cancelled 2010-12-31
- ZAJAC, JOSEPH M NC2021-06-29 active