Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1HM callsign genealogy
Currently held by MIEROP, HAROLD P
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 N1HM's current licensee, walking backwards.
- Lawor, John DMAgranted 2013-06-07cancelled 2015-11-07
Successor callsigns
Callsigns held now by people who previously held N1HM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N1HM, oldest first.
- MIEROP, HAROLD P NH2003-09-17 → cancelled 2015-10-20
- LAWOR, JOHN D MA2025-12-09 active