Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5JU callsign genealogy
Currently held by Umland, Julius C
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 W5JU's current licensee, walking backwards.
- CAIN, VICKI JTXgranted 2015-01-07cancelled 2015-08-25
Successor callsigns
Callsigns held now by people who previously held W5JU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5JU, oldest first.
- Umland, Julius C TX2006-09-21 → cancelled 2015-04-20
- CAIN, VICKI J TX2025-07-12 active