Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5LOB callsign genealogy
Currently held by OBENSHAIN, KARL
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 W5LOB's current licensee, walking backwards.
- OBENSHAIN, KARLTXgranted 2016-07-13cancelled 2016-09-24
Successor callsigns
Callsigns held now by people who previously held W5LOB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5LOB, oldest first.
- MALMSTROM, EDSEL T TX1988-01-19 → cancelled 2000-01-20
- OBENSHAIN, KARL TX2016-09-24 active