Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA1ARB callsign genealogy
Currently held by KATZ, ROBERT A
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 KA1ARB's current licensee, walking backwards.
- KJ4ZKFcancelledConnecticut Expats Radiosport ClubNCgranted 2010-12-01cancelled 2016-01-08
Successor callsigns
Callsigns held now by people who previously held KA1ARB.
- KATZ, ROBERT ANCgranted 2021-09-07
All historical holders
Every license row we've seen with the callsign KA1ARB, oldest first.
- KATZ, ROBERT A NC2007-02-15 → cancelled 2011-11-08
- Connecticut Expats Radiosport Club NC2016-01-08 active