Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1RKZ callsign genealogy
Currently held by Blackstrap Repeater Club
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 W1RKZ's current licensee, walking backwards.
- KC1GVFcancelledBlackstrap Repeater ClubMEgranted 2016-12-29cancelled 2017-05-20
Successor callsigns
Callsigns held now by people who previously held W1RKZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1RKZ, oldest first.
- HARRIS, ROBERT G ME2004-10-19 → cancelled 2017-01-18
- Blackstrap Repeater Club ME2017-05-20 active