Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4TEK callsign genealogy
Currently held by Holderread, Barry 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 N4TEK's current licensee, walking backwards.
- McDow, Mark EFLgranted 2018-10-16cancelled 2025-05-28
Successor callsigns
Callsigns held now by people who previously held N4TEK.
- Holderread, Barry MGAgranted 2026-05-05
All historical holders
Every license row we've seen with the callsign N4TEK, oldest first.
- Holderread, Barry M GA2006-01-10 → cancelled 2006-04-15
- McDow, Mark E FL2025-05-28 active