Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF7PIO callsign genealogy
Currently held by Szymanski, Timothy 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 KF7PIO's current licensee, walking backwards.
- Szymanski, Timothy RNVgranted 2017-11-09cancelled 2017-12-02
Successor callsigns
Callsigns held now by people who previously held KF7PIO.
- Nackman, Lee RNCgranted 2021-03-16
All historical holders
Every license row we've seen with the callsign KF7PIO, oldest first.
- Nackman, Lee R WA2011-04-26 → cancelled 2011-05-24
- Szymanski, Timothy R NV2017-12-02 active