uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

N0THC callsign genealogy

Currently held by Carroll, Thomas H

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 N0THC's current licensee, walking backwards.

  1. KC0NVScancelled· G
    Carroll, Thomas HMOgranted 2018-05-15cancelled 2025-08-08

Successor callsigns

Callsigns held now by people who previously held N0THC.

  1. KC0NVScancelled· G
    Carroll, Thomas HMOgranted 2018-05-15cancelled 2025-08-08
  2. KC0NVScancelled· G
    Carroll, Thomas HMOgranted 2010-11-05cancelled 2014-04-04

All historical holders

Every license row we've seen with the callsign N0THC, oldest first.

  • GRIMM, DORIS A IA
    1992-06-30 → cancelled 2004-07-01
  • Carroll, Thomas H MO
    2010-06-29 → cancelled 2010-11-05
  • Carroll, Thomas H MO
    2014-04-04 → cancelled 2018-05-15
  • Carroll, Thomas H MO
    2025-08-08 active
← Back to N0THC License history →