Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1ZCR callsign genealogy
Currently held by Tyning, 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 K1ZCR's current licensee, walking backwards.
- Tyning, William AMAgranted 2011-10-18cancelled 2011-11-08
Successor callsigns
Callsigns held now by people who previously held K1ZCR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1ZCR, oldest first.
- TYNING JR, HAROLD W MA1995-03-28 → cancelled 2007-03-29
- Tyning, William A NV2021-08-20 active