Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KK4SRL callsign genealogy
Currently held by Back, Ryan T
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 KK4SRL's current licensee, walking backwards.
- Back, Ryan TGAgranted 2009-03-23cancelled 2013-07-19
Successor callsigns
Callsigns held now by people who previously held KK4SRL.
- Back, Ryan TGAgranted 2009-03-23cancelled 2013-11-13