Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4YRU callsign genealogy
Currently held by LIMERICK, CLIFTON E
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 N4YRU's current licensee, walking backwards.
- Knudsen, Jonathan ATNgranted 2026-01-06cancelled 2026-02-07
Successor callsigns
Callsigns held now by people who previously held N4YRU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4YRU, oldest first.
- LIMERICK, CLIFTON E TN2000-03-03 → cancelled 2012-05-30
- Knudsen, Jonathan A TN2026-02-07 active