Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1YYM callsign genealogy
Currently held by Maher, John
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 K1YYM's current licensee, walking backwards.
- Maher, JohnMAgranted 2018-05-09cancelled 2021-05-07
Successor callsigns
Callsigns held now by people who previously held K1YYM.
No current licensee on record previously held this callsign.