uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K9TF callsign genealogy

Currently held by BOROWSKI, JAMES 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 K9TF's current licensee, walking backwards.

  1. WA9YSDactive
    KITE FLIERS RADIO CLUBWIgranted 2019-12-03
  2. K9FRCcancelled
    KITE FLIERS RADIO CLUBWIgranted 2006-04-21cancelled 2009-04-14
  3. KC9IYZcancelled
    KITE FLIERS RADIO CLUBWIgranted 2006-03-08cancelled 2006-04-21

Successor callsigns

Callsigns held now by people who previously held K9TF.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign K9TF, oldest first.

  • DIBBLE, JAN W IN
    2000-09-02 → cancelled 2003-02-26
  • BOROWSKI, JAMES A MN
    2025-12-30 active
  • KELLER, JEFFREY L
    — → cancelled 1997-08-21
← Back to K9TF License history →