Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N9CHF callsign genealogy
Currently held by Allen, Patrick S
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 N9CHF's current licensee, walking backwards.
- Allen, Patrick SILgranted 2001-12-19cancelled 2002-04-23
Successor callsigns
Callsigns held now by people who previously held N9CHF.
- Allen, Patrick SILgranted 2021-01-01