Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9GMA callsign genealogy
Currently held by HEIM, KATHLEEN TASS 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 K9GMA's current licensee, walking backwards.
- Watson, Robert DNMgranted 2024-05-21cancelled 2025-07-25
Successor callsigns
Callsigns held now by people who previously held K9GMA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9GMA, oldest first.
- HEIM, KATHLEEN TASS F ID2012-04-21 → cancelled 2024-04-23
- Watson, Robert D NM2025-07-25 active