Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3KDU callsign genealogy
Currently held by OLLEY, GEORGE 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 W3KDU's current licensee, walking backwards.
- GROW, WILLIAM FPAgranted 2021-12-31
Successor callsigns
Callsigns held now by people who previously held W3KDU.
- GROW, WILLIAM FPAgranted 2021-12-31
All historical holders
Every license row we've seen with the callsign W3KDU, oldest first.
- OLLEY, GEORGE M PA1996-02-07 → cancelled 2008-02-08
- GROW, WILLIAM F PA2018-09-28 → cancelled 2021-12-31