Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3CM callsign genealogy
Currently held by BERGER, MARTIN J
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 W3CM's current licensee, walking backwards.
- BERGER, MARTIN JNCgranted 2014-04-11cancelled 2015-06-13
Successor callsigns
Callsigns held now by people who previously held W3CM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3CM, oldest first.
- BREWER, JOHN E TX2005-02-08 → cancelled 2013-05-24
- BERGER, MARTIN J NC2015-06-13 active