Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1RTC callsign genealogy
Currently held by Campbell Sr, Robert T
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 N1RTC's current licensee, walking backwards.
- Campbell Sr, Robert TALgranted 2021-05-05cancelled 2021-06-11
Successor callsigns
Callsigns held now by people who previously held N1RTC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1RTC, oldest first.
- HOLLISTER, WALTER M MA2004-02-06 → cancelled 2016-04-27
- Campbell Sr, Robert T AL2021-06-11 active