Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SDD callsign genealogy
Currently held by DURHAM, SHERRY 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 K4SDD's current licensee, walking backwards.
- DURHAM, SHERRY DNHgranted 1999-03-05cancelled 2003-04-05
Successor callsigns
Callsigns held now by people who previously held K4SDD.
No current licensee on record previously held this callsign.