Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KB1KRU callsign genealogy
Currently held by HIMMELFARB, MARTIN
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 KB1KRU's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KB1KRU.
- Himmelfarb, MartinFLgranted 2013-11-19cancelled 2026-03-06