Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0CFR callsign genealogy
Currently held by MARPLES, JOHN 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 KA0CFR's current licensee, walking backwards.
- Randall, CharlesCOgranted 2023-12-23cancelled 2024-01-13
Successor callsigns
Callsigns held now by people who previously held KA0CFR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0CFR, oldest first.
- MARPLES, JOHN W KS1998-09-28 → cancelled 2005-09-22
- Randall, Charles CO2024-01-13 active