Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K3GRO callsign genealogy
Currently held by Boop, Logan
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 K3GRO's current licensee, walking backwards.
- Boop, LoganCAgranted 2010-05-17cancelled 2010-06-08
Successor callsigns
Callsigns held now by people who previously held K3GRO.
- Boop, LoganCAgranted 2011-01-22cancelled 2023-01-24