Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4NPD callsign genealogy
Currently held by Dougherty, Keith 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 K4NPD's current licensee, walking backwards.
- ROBLES, PETERFLgranted 2021-01-30cancelled 2026-04-24
Successor callsigns
Callsigns held now by people who previously held K4NPD.
- Dougherty, Keith WGAgranted 2008-07-08cancelled 2011-02-15
All historical holders
Every license row we've seen with the callsign K4NPD, oldest first.
- Dougherty, Keith W GA2007-09-07 → cancelled 2008-07-08
- ROBLES, PETER FL2026-04-24 active