Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2GR callsign genealogy
Currently held by GLASER, MARCUS
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 K2GR's current licensee, walking backwards.
- KOTTSCHLAG, GERHARD RNEgranted 2010-11-23cancelled 2012-07-06
Successor callsigns
Callsigns held now by people who previously held K2GR.
- ALLISON, JOSEPH RNYgranted 2020-12-29
All historical holders
Every license row we've seen with the callsign K2GR, oldest first.
- GLASER, MARCUS OH1988-11-08 → cancelled 2000-11-09
- ALLISON, JOSEPH R NY2001-03-02 → cancelled 2010-06-15
- KOTTSCHLAG, GERHARD R NE2022-04-12 active