Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4QFM callsign genealogy
Currently held by Gobble, Russell D
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 K4QFM's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4QFM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4QFM, oldest first.
- FREYTAG, OTTO FL1995-12-01 → cancelled 2007-12-04
- Gobble, Russell D TN2025-06-21 active