Confidence: Medium · Source: FCC ULS · As of 2026-09-10

KK4GRO

Cancelled

St Cyr, William J

Location: Palm Beach Gardens, FL
Class: Amateur Extra
Granted: 2012-02-10
Expires: 2022-02-10
FRN: 0021486600

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Vanity availability

Available

Available now

KK4GRO cleared its 2-year hold on 2015-04-30. Eligible for vanity application.

Last held by St Cyr, William J (FL).

Confidence: High

Cancelled licenses begin the 2-year hold immediately, so this date is the firm release date per §97.19. Already past — fileable subject to FCC verification.

Callsign genealogy

Full chain →

Prior holders later became

KK4GOactive· E
St Cyr, William JNJgranted 2023-03-07

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

KD4SPY 2026-09-11
KK4LOA 2026-09-11
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KO4UTL 2026-09-13
KQ4RHZ 2026-09-13

Starting with KK4

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KK4LNP TN · 2026-09-11
KK4LNQ TN · 2026-09-11
KK4LNT TN · 2026-09-11
KK4LNV TN · 2026-09-11
KK4LOA FL · 2026-09-11

Full history → Vanity availability → Callsign genealogy →