Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9CTR callsign genealogy
Currently held by NOLAN, PATRICK 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 K9CTR's current licensee, walking backwards.
- NOLAN, PATRICK LMDgranted 2017-01-18cancelled 2017-02-07
Successor callsigns
Callsigns held now by people who previously held K9CTR.
- Toponce, AaronUTgranted 2021-04-01
All historical holders
Every license row we've seen with the callsign K9CTR, oldest first.
- TOPONCE, AARON S UT2010-07-02 → cancelled 2011-06-24
- NOLAN, PATRICK L MD2017-02-07 active