Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7IF callsign genealogy
Currently held by Christiansen, Howard M
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 AD7IF's current licensee, walking backwards.
- Christiansen, Howard MUTgranted 1999-09-28cancelled 2006-04-03
Successor callsigns
Callsigns held now by people who previously held AD7IF.
No current licensee on record previously held this callsign.