Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3CNP callsign genealogy
Currently held by Mahady Sr, Howard W
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 K3CNP's current licensee, walking backwards.
- Mahady Sr, Howard WPAgranted 2015-10-02cancelled 2015-10-20
Successor callsigns
Callsigns held now by people who previously held K3CNP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3CNP, oldest first.
- MC DERMOTT, WILLIAM H FL2000-08-18 → cancelled 2012-08-22
- Mahady Sr, Howard W PA2015-10-20 active