Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5RDB callsign genealogy
Currently held by GUTTMANN, HENRY E
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 W5RDB's current licensee, walking backwards.
- BULLOCK, RICKEY DTXgranted 2010-11-18cancelled 2011-09-02
Successor callsigns
Callsigns held now by people who previously held W5RDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5RDB, oldest first.
- GUTTMANN, HENRY E NM1996-01-31 → cancelled 2008-02-01
- BULLOCK, RICKEY D WI2021-07-15 active