Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4FRU callsign genealogy
Currently held by SENSINTAFFAR, JACK D
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 K4FRU's current licensee, walking backwards.
- SENSINTAFFAR, JACK DNCgranted 1999-05-17cancelled 2001-09-07
Successor callsigns
Callsigns held now by people who previously held K4FRU.
- SENSINTAFFAR, JACK DKSgranted 2014-09-03cancelled 2018-06-19