Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7TZZ callsign genealogy
Currently held by Shirey, James M
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 W7TZZ's current licensee, walking backwards.
- Grayson, Teresa MWAgranted 2022-04-15cancelled 2022-06-07
Successor callsigns
Callsigns held now by people who previously held W7TZZ.
- Shirey, James MWYgranted 2019-09-17
All historical holders
Every license row we've seen with the callsign W7TZZ, oldest first.
- Shirey, James M WY2016-03-14 → cancelled 2019-09-17
- Grayson, Teresa M PA2022-06-07 active