Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD8ORR callsign genealogy
Currently held by PORTER, MICHAEL R
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 KD8ORR's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD8ORR.
- PORTER, MICHAEL RMIgranted 2009-08-25cancelled 2012-01-28