Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9GSP callsign genealogy
Currently held by TUN, WALTER O
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 K9GSP's current licensee, walking backwards.
- TUN, WALTER OILgranted 2007-04-10cancelled 2008-03-11
Successor callsigns
Callsigns held now by people who previously held K9GSP.
No current licensee on record previously held this callsign.