Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0AAY callsign genealogy
Currently held by Pfeifer, Randolph J
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 K0AAY's current licensee, walking backwards.
- Pfeifer, Randolph JMNgranted 2015-02-12cancelled 2015-06-16
Successor callsigns
Callsigns held now by people who previously held K0AAY.
No current licensee on record previously held this callsign.