Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF6IRK callsign genealogy
Currently held by Scheidemantel, Mark A
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 KF6IRK's current licensee, walking backwards.
- Scheidemantel, Mark ACAgranted 2017-06-09cancelled 2017-08-11
Successor callsigns
Callsigns held now by people who previously held KF6IRK.
- Scheidemantel, Mark ACAgranted 2017-06-09cancelled 2017-08-11
All historical holders
Every license row we've seen with the callsign KF6IRK, oldest first.
- Scheidemantel, Mark A CA2016-11-02 → cancelled 2017-06-09
- Scheidemantel, Mark A CA2017-08-11 active