Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4LRO callsign genealogy
Currently held by O Hearn, Lawrence 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 K4LRO's current licensee, walking backwards.
- O Hearn, Lawrence RFLgranted 1994-07-16cancelled 2003-10-15
Successor callsigns
Callsigns held now by people who previously held K4LRO.
No current licensee on record previously held this callsign.