Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4AMH callsign genealogy
Currently held by Hartle, Robert A
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 N4AMH's current licensee, walking backwards.
- Hartle, Robert ATNgranted 2016-01-07cancelled 2017-01-14
Successor callsigns
Callsigns held now by people who previously held N4AMH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4AMH, oldest first.
- KAPPES, MICHAEL A KY1998-01-05 → cancelled 2002-08-20
- Hartle, Robert A TN2017-01-14 active