Confidence: Medium · Source: FCC ULS · As of 2026-09-15
W1OLD callsign genealogy
Currently held by CHIN, ROBERT W
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 W1OLD's current licensee, walking backwards.
- CHIN, ROBERT WMAgranted 2009-11-05cancelled 2014-08-26
Successor callsigns
Callsigns held now by people who previously held W1OLD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1OLD, oldest first.
- UMINA, ANTHONY P MA2000-09-19 → cancelled 2012-09-20
- CHIN, ROBERT W MA2014-08-26 → cancelled 2026-08-29