Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1S callsign genealogy
Currently held by HARROW, CHARLES 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 AB1S's current licensee, walking backwards.
- RODRIGUEZ, ADALBERTOCTgranted 2007-12-26cancelled 2017-07-04
Successor callsigns
Callsigns held now by people who previously held AB1S.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AB1S, oldest first.
- HARROW, CHARLES A NH2005-03-31 → cancelled 2017-06-16
- RODRIGUEZ, ADALBERTO CT2017-07-04 active