Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9TOP callsign genealogy
Currently held by Hanrahan, Charles L
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 K9TOP's current licensee, walking backwards.
- Hanrahan, Charles LCAgranted 2011-04-18cancelled 2011-05-06
Successor callsigns
Callsigns held now by people who previously held K9TOP.
No current licensee on record previously held this callsign.