Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4TOB callsign genealogy
Currently held by TOBIN, MICHAEL
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 K4TOB's current licensee, walking backwards.
- TOBIN, MICHAELFLgranted 2023-07-01cancelled 2023-08-25
Successor callsigns
Callsigns held now by people who previously held K4TOB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4TOB, oldest first.
- JONES, CHARLES T AL2004-04-29 → cancelled 2016-06-01
- TOBIN, MICHAEL FL2023-08-25 active