Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1RK callsign genealogy
Currently held by Karcher Jr, Ralph E
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 W1RK's current licensee, walking backwards.
- Mitchell, John CCAgranted 2013-02-14cancelled 2016-04-15
Successor callsigns
Callsigns held now by people who previously held W1RK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1RK, oldest first.
- Karcher Jr, Ralph E MA2005-12-02 → cancelled 2014-03-27
- Mitchell, John C CA2026-02-11 active