Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KT4COS callsign genealogy
Currently held by GAFFORD, JACOB 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 KT4COS's current licensee, walking backwards.
- GAFFORD, JACOB RTXgranted 2021-09-27cancelled 2021-10-15
Successor callsigns
Callsigns held now by people who previously held KT4COS.
No current licensee on record previously held this callsign.