Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N3MKS callsign genealogy
Currently held by Shepard, Michael K
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 N3MKS's current licensee, walking backwards.
- Shepard, Michael KPAgranted 2019-04-22cancelled 2019-05-14
Successor callsigns
Callsigns held now by people who previously held N3MKS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N3MKS, oldest first.
- DOUGHERTY, WILLIAM E PA1992-06-02 → cancelled 2004-06-03
- Shepard, Michael K PA2019-05-14 active