Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1GUZ callsign genealogy
Currently held by Guzeika, Henry R
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 W1GUZ's current licensee, walking backwards.
- Guzeika, Henry RRIgranted 2015-08-07cancelled 2015-10-14
Successor callsigns
Callsigns held now by people who previously held W1GUZ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1GUZ, oldest first.
- BARON, WILLIAM FL1988-02-23 → cancelled 2000-02-24
- Guzeika, Henry R RI2026-01-03 active