Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1OF callsign genealogy
Currently held by PRENDERGAST JR, RONALD 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 W1OF's current licensee, walking backwards.
- PRENDERGAST JR, RONALD WMAgranted 2013-03-26cancelled 2019-02-02
Successor callsigns
Callsigns held now by people who previously held W1OF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1OF, oldest first.
- MITCHELL, BRIAN C NH2007-05-11 → cancelled 2018-12-19
- PRENDERGAST JR, RONALD W MA2019-02-02 active