Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1IHM callsign genealogy
Currently held by Mc Mahon, Oliver B
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 K1IHM's current licensee, walking backwards.
- MC MAHON, OLIVER BNHgranted 1993-05-04cancelled 2002-04-13
- KA1ZPYno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K1IHM.
No current licensee on record previously held this callsign.