Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4JHY callsign genealogy
Currently held by Yalowitz, Joseph H
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 K4JHY's current licensee, walking backwards.
- Yalowitz, Joseph HALgranted 2020-08-31cancelled 2020-12-04
Successor callsigns
Callsigns held now by people who previously held K4JHY.
No current licensee on record previously held this callsign.