Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2ATF callsign genealogy
Currently held by GILLSON, TODD M
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 K2ATF's current licensee, walking backwards.
- Shannon, CharlesNYgranted 2016-03-04cancelled 2017-03-20
Successor callsigns
Callsigns held now by people who previously held K2ATF.
- GILLSON, TODD MNYgranted 2014-05-13cancelled 2017-02-07
All historical holders
Every license row we've seen with the callsign K2ATF, oldest first.
- GILLSON, TODD M NY2008-10-02 → cancelled 2014-05-13
- Shannon, Charles NY2017-03-20 active