Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7AYF callsign genealogy
Currently held by DORSCH SR, RUSSELL F
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 W7AYF's current licensee, walking backwards.
- Olsen, Michael PWYgranted 2018-10-18cancelled 2018-11-06
Successor callsigns
Callsigns held now by people who previously held W7AYF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7AYF, oldest first.
- DORSCH SR, RUSSELL F AZ1988-05-24 → cancelled 2000-05-25
- Olsen, Michael P WY2018-11-06 active