Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD8RTR callsign genealogy
Currently held by Seiler, William 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 KD8RTR's current licensee, walking backwards.
- Markland, Melissa SOHgranted 2022-04-18cancelled 2022-05-10
Successor callsigns
Callsigns held now by people who previously held KD8RTR.
- Seiler, William AOHgranted 2025-06-25
All historical holders
Every license row we've seen with the callsign KD8RTR, oldest first.
- Seiler, William A OH2012-02-23 → cancelled 2015-07-21
- Markland, Melissa S OH2022-05-10 active