Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7CTM callsign genealogy
Currently held by COLLARD JR, NELSON B
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 K7CTM's current licensee, walking backwards.
- Robbins, Thomas MMTgranted 2015-12-01cancelled 2015-12-22
Successor callsigns
Callsigns held now by people who previously held K7CTM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7CTM, oldest first.
- COLLARD JR, NELSON B WA1998-10-06 → cancelled 2010-10-07
- ROBBINS, THOMAS M MT2025-09-26 active