Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4RRL callsign genealogy
Currently held by Schoppaul, John 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 K4RRL's current licensee, walking backwards.
- Schoppaul, John CFLgranted 2017-10-26cancelled 2019-07-30
Successor callsigns
Callsigns held now by people who previously held K4RRL.
No current licensee on record previously held this callsign.