Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6CIA callsign genealogy
Currently held by CRESMER, LAURENCE 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 K6CIA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K6CIA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6CIA, oldest first.
- CRESMER, LAURENCE F CA1991-12-10 → cancelled 2003-12-11
- GRAY, JAMES E AZ2017-03-07 active