Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6RTB callsign genealogy
Currently held by Haleluk, Alexander 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 W6RTB's current licensee, walking backwards.
- Haleluk, Alexander RCAgranted 2013-12-17cancelled 2014-01-10
Successor callsigns
Callsigns held now by people who previously held W6RTB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6RTB, oldest first.
- WATSON, WILLIAM C PA1998-02-09 → cancelled 2010-02-10
- Haleluk, Alexander R CA2014-01-10 → cancelled 2026-03-07