Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9SRD callsign genealogy
Currently held by THAYER, ED 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 K9SRD's current licensee, walking backwards.
- THAYER, ED DPAgranted 2011-03-08cancelled 2011-09-07
Successor callsigns
Callsigns held now by people who previously held K9SRD.
No current licensee on record previously held this callsign.