Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB4YLM callsign genealogy
Currently held by LOONEY, HAROLD A
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 KB4YLM's current licensee, walking backwards.
- LOONEY, HAROLD ATNgranted 2018-10-22cancelled 2019-05-10
Successor callsigns
Callsigns held now by people who previously held KB4YLM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB4YLM, oldest first.
- LOONEY, HAROLD A TN1998-08-19 → cancelled 2010-08-20
- LOONEY, HAROLD A TN2019-05-10 active