Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4CSL callsign genealogy
Currently held by HANNAH, FRANK 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 K4CSL's current licensee, walking backwards.
- HANNAH, FRANK TNCgranted 2000-09-22cancelled 2008-09-23
Successor callsigns
Callsigns held now by people who previously held K4CSL.
No current licensee on record previously held this callsign.