Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WH7YL callsign genealogy
Currently held by KOLLENBAUM, HOLLY 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 WH7YL's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WH7YL.
No current licensee on record previously held this callsign.