Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1GRL callsign genealogy
Currently held by LaCosse, Gregory 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 K1GRL's current licensee, walking backwards.
- LaCosse, Gregory RAZgranted 2007-06-04cancelled 2007-12-14
Successor callsigns
Callsigns held now by people who previously held K1GRL.
- LaCosse, Gregory RAZgranted 2017-10-17