Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9LCM callsign genealogy
Currently held by RADTKE, 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 W9LCM's current licensee, walking backwards.
- RADTKE, JOHN WINgranted 2018-09-27cancelled 2018-10-16
Successor callsigns
Callsigns held now by people who previously held W9LCM.
No current licensee on record previously held this callsign.