Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0CNM callsign genealogy
Currently held by Droullard, Robert F
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 W0CNM's current licensee, walking backwards.
- Cowherd, Shane BCOgranted 2017-10-10cancelled 2017-10-31
Successor callsigns
Callsigns held now by people who previously held W0CNM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0CNM, oldest first.
- Droullard, Robert F CO2005-01-19 → cancelled 2017-03-21
- Cowherd, Shane B CO2017-10-31 active