Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4QY callsign genealogy
Currently held by Gellerman, 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 K4QY's current licensee, walking backwards.
- Magnet, Andrew DFLgranted 2016-09-16cancelled 2021-01-05
Successor callsigns
Callsigns held now by people who previously held K4QY.
- Krenz, Jeffrey SMIgranted 2018-12-15
All historical holders
Every license row we've seen with the callsign K4QY, oldest first.
- Gellerman, Robert F FL2005-05-31 → cancelled 2017-07-25
- Krenz, Jeffrey S GA2017-08-12 → cancelled 2018-12-15
- Magnet, Andrew D FL2021-01-05 active