Confidence: Medium · Source: FCC ULS · As of 2026-10-26
K4WRR callsign genealogy
Currently held by MARTIN, JOHN
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 K4WRR's current licensee, walking backwards.
- MARTIN, JOHNGAgranted 2024-10-26cancelled 2026-09-26
Successor callsigns
Callsigns held now by people who previously held K4WRR.
No current licensee on record previously held this callsign.