Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4RKO callsign genealogy
Currently held by WHYTSELL, JOHN 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 N4RKO's current licensee, walking backwards.
- BUKVIC, MARKOTXgranted 2012-06-20cancelled 2021-05-25
Successor callsigns
Callsigns held now by people who previously held N4RKO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4RKO, oldest first.
- WHYTSELL, JOHN M VA2007-07-27 → cancelled 2019-10-25
- BUKVIC, MARKO TX2021-05-25 active