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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K2QF callsign genealogy

Currently held by KARDOS, MICHAEL L

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 K2QF's current licensee, walking backwards.

  1. AC0HTcancelled· E
    Gritzmacher, Donald ECOgranted 2017-01-28cancelled 2025-12-09
  2. KC0ZNUcancelled· E
    Gritzmacher, Donald ECOgranted 2007-02-16cancelled 2007-04-18

Successor callsigns

Callsigns held now by people who previously held K2QF.

  1. N8KOactive· E
    Kesler, Carlton SMIgranted 2023-10-28
  2. K4QTactive· E
    Aukamp, David WFLgranted 2022-06-24
  3. K2DAactive· E
    ELLENBOGEN, WAYNE LNYgranted 2016-10-15
  4. K6VDexpired· E
    Hull, Roy ACAgranted 2010-01-08cancelled 2022-01-11

All historical holders

Every license row we've seen with the callsign K2QF, oldest first.

  • KARDOS, MICHAEL L PA
    1988-04-05 → cancelled 2000-04-06
  • Aukamp, David W FL
    2002-08-17 → cancelled 2002-09-17
  • ELLENBOGEN, WAYNE L NY
    2004-11-10 → cancelled 2006-12-05
  • Hull, Roy A CA
    2009-12-01 → cancelled 2010-01-08
  • Kesler, Carlton S MI
    2023-04-18 → cancelled 2023-10-28
  • Gritzmacher, Donald E CO
    2025-12-09 active
← Back to K2QF License history →