Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NF4H callsign genealogy
Currently held by SHAW JR, RICHARD M
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 NF4H's current licensee, walking backwards.
- WALBERT, JOHN SVAgranted 2024-09-24cancelled 2025-03-04
Successor callsigns
Callsigns held now by people who previously held NF4H.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NF4H, oldest first.
- SHAW JR, RICHARD M TN2015-06-12 → cancelled 2023-02-13
- WALBERT, JOHN S VA2025-03-04 active