Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NN4RH callsign genealogy
Currently held by Holtz, Ronald 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 NN4RH's current licensee, walking backwards.
- Holtz, Ronald LVAgranted 2011-06-07cancelled 2013-08-27
Successor callsigns
Callsigns held now by people who previously held NN4RH.
- Holtz, Ronald LVAgranted 2011-06-07cancelled 2013-08-27
All historical holders
Every license row we've seen with the callsign NN4RH, oldest first.
- Holtz, Ronald L VA2006-04-28 → cancelled 2011-06-07
- Holtz, Ronald L NC2023-06-01 active