Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB5SDR callsign genealogy
Currently held by TANNER, ROBERT W
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 KB5SDR's current licensee, walking backwards.
- Stafford, David LTXgranted 2018-04-09cancelled 2018-04-28
Successor callsigns
Callsigns held now by people who previously held KB5SDR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB5SDR, oldest first.
- TANNER, ROBERT W MS1992-05-05 → cancelled 2004-05-06
- Stafford, David L TX2018-04-28 active