Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1SER callsign genealogy
Currently held by HATCH, DAVID P
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 W1SER's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W1SER.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1SER, oldest first.
- HATCH, DAVID P CA2010-08-28 → cancelled 2022-09-13
- Rubin, Solomon E DC2023-02-10 active