Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4FH callsign genealogy
Currently held by FROST, WALTER R
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 N4FH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N4FH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4FH, oldest first.
- FROST, WALTER R MS1997-05-22 → cancelled 2001-01-23
- Andrews, Mark A AL2017-01-26 active