Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5TLC callsign genealogy
Currently held by HOLBROOK, JON C
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 W5TLC's current licensee, walking backwards.
- Holbrook, Jon CARgranted 1995-08-16cancelled 2004-04-06
Successor callsigns
Callsigns held now by people who previously held W5TLC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5TLC, oldest first.
- WHITFIELD, JAMES L AR1995-11-28 → cancelled 1999-01-02
- HOLBROOK, JON C AR2024-04-02 active