Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4TDP callsign genealogy
Currently held by ZIKO, ANDREA L
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 N4TDP's current licensee, walking backwards.
- Pagels, Troy DFLgranted 2008-02-19cancelled 2009-11-06
Successor callsigns
Callsigns held now by people who previously held N4TDP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4TDP, oldest first.
- ZIKO, ANDREA L SC1988-06-14 → cancelled 2000-06-15
- PAGELS, TROY D FL2019-09-23 active