Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0GR callsign genealogy
Currently held by PRESTON, ROBERT R
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 K0GR's current licensee, walking backwards.
- Miller, Clinton AIAgranted 2010-12-07cancelled 2018-03-13
Successor callsigns
Callsigns held now by people who previously held K0GR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0GR, oldest first.
- PRESTON, ROBERT R IA2007-01-04 → cancelled 2016-02-22
- Miller, Clinton A IA2018-03-13 active