Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5COI callsign genealogy
Currently held by Nash, Harold G
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 K5COI's current licensee, walking backwards.
- Nash, Harold GTXgranted 2023-01-07cancelled 2023-03-07
Successor callsigns
Callsigns held now by people who previously held K5COI.
No current licensee on record previously held this callsign.