Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4YF callsign genealogy
Currently held by Dwyer, Harold R
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 AJ4YF's current licensee, walking backwards.
- Dwyer, Harold RFLgranted 2010-03-16cancelled 2010-04-13
Successor callsigns
Callsigns held now by people who previously held AJ4YF.
- Dwyer, Harold RFLgranted 2010-05-11cancelled 2010-10-15