Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1JKU callsign genealogy
Currently held by Bruderer, Robert D
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 W1JKU's current licensee, walking backwards.
- Bruderer, Robert DGAgranted 2017-10-31cancelled 2018-03-30
Successor callsigns
Callsigns held now by people who previously held W1JKU.
No current licensee on record previously held this callsign.