uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K3FS callsign genealogy

Currently held by KIRSHNER, HOWARD J

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 K3FS's current licensee, walking backwards.

  1. K3FSScancelled· E
    Speicher Iv, Franklin SPAgranted 1999-03-25cancelled 2008-05-23
  2. N3MJUcancelled
    cancelled 1999-03-25

Successor callsigns

Callsigns held now by people who previously held K3FS.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K3FS, oldest first.

  • KIRSHNER, HOWARD J MD
    1997-07-01 → cancelled 2000-11-21
  • Speicher IV, Franklin S PA
    2018-02-24 active
← Back to K3FS License history →