Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9CSP callsign genealogy
Currently held by Baker, Frank J
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 K9CSP's current licensee, walking backwards.
- Baker, Frank JINgranted 2024-02-07cancelled 2024-03-16
Successor callsigns
Callsigns held now by people who previously held K9CSP.
- Banks, David ASCgranted 2025-09-10
All historical holders
Every license row we've seen with the callsign K9CSP, oldest first.
- Banks, David A CO2011-05-10 → cancelled 2015-10-06
- Baker, Frank J IN2024-03-16 active