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

K1YYY callsign genealogy

Currently held by BILLINGTON, William R

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 K1YYY's current licensee, walking backwards.

  1. N1NVYcancelled· G
    BILLINGTON, William RNHgranted 2024-05-24cancelled 2024-07-09
  2. K5AAAactive· T
    Callahan, Kevin JTXgranted 2026-06-13
  3. KJ5PNBcancelled· T
    Callahan, Kevin JTXgranted 2026-04-14cancelled 2026-06-13

Successor callsigns

Callsigns held now by people who previously held K1YYY.

  1. N1LRMactive· G
    BILLINGTON, William RNHgranted 2026-06-06
  2. K5AAAcancelled· G
    BILLINGTON, William RTXgranted 2024-03-26cancelled 2024-05-24
  3. W4SWWactive· G
    HALLMARK, EARNEST LFLgranted 2020-07-28

All historical holders

Every license row we've seen with the callsign K1YYY, oldest first.

  • HALLMARK, EARNEST L FL
    2017-11-06 → cancelled 2020-07-28
  • BILLINGTON, William R TX
    2023-10-24 → cancelled 2024-03-26
  • BILLINGTON, William R NH
    2024-07-09 → cancelled 2026-06-06
← Back to K1YYY License history →