Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9GPN callsign genealogy
Currently held by Linzmeyer, Keith M
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 K9GPN's current licensee, walking backwards.
- Linzmeyer, Keith MWIgranted 2014-12-22cancelled 2015-10-02
Successor callsigns
Callsigns held now by people who previously held K9GPN.
- GADE, OLIVER AARgranted 2006-09-08cancelled 2018-11-06