Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7ZRF callsign genealogy
Currently held by YBARRA, Frank C
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 N7ZRF's current licensee, walking backwards.
- YBARRA, Frank CAZgranted 2018-05-16cancelled 2018-06-29
Successor callsigns
Callsigns held now by people who previously held N7ZRF.
- YBARRA, Frank CAZgranted 2018-07-27
All historical holders
Every license row we've seen with the callsign N7ZRF, oldest first.
- DUNCAN, DAVID P WA1992-07-07 → cancelled 2004-07-08
- YBARRA, Frank C AZ2018-06-29 → cancelled 2018-07-27