Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC4RLO callsign genealogy
Currently held by Guthrie, David C
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 KC4RLO's current licensee, walking backwards.
- Guthrie, David CGAgranted 2026-01-28cancelled 2026-04-03
Successor callsigns
Callsigns held now by people who previously held KC4RLO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC4RLO, oldest first.
- RANSDELL, JOSHUA M KY1990-06-12 → cancelled 2002-06-13
- Guthrie, David C GA2026-04-03 active