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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KK4YYF callsign genealogy

Currently held by Robertson, Matthew G

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 KK4YYF's current licensee, walking backwards.

  1. K4IGYcancelled· G
    Robertson, Matthew GNCgranted 2013-04-16cancelled 2014-03-07
  2. W7MGRcancelled· G
    Robertson, Matthew GNCgranted 2022-12-09cancelled 2024-06-21
  3. KS4ALTcancelled· G
    Robertson, Matthew GNCgranted 2022-04-05cancelled 2022-12-09
  4. W8MGRcancelled· G
    Robertson, Matthew GOHgranted 2021-09-04cancelled 2022-04-05

Successor callsigns

Callsigns held now by people who previously held KK4YYF.

  1. N4MGRcancelled· G
    Robertson, Matthew GNCgranted 2014-05-02cancelled 2015-11-28
← Back to KK4YYF License history →