Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0RTK callsign genealogy
Currently held by Keller, Robert
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 K0RTK's current licensee, walking backwards.
- Keller, Robert TMOgranted 2008-08-22cancelled 2008-09-12
Successor callsigns
Callsigns held now by people who previously held K0RTK.
No current licensee on record previously held this callsign.