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

KK4ISF

Cancelled

Silva, Frank A

Location: Miami, FL
Class: Amateur Extra
Granted: 2022-02-24
Expires: 2032-04-20
FRN: 0021702964

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Vanity availability

Available

Available now

KK4ISF cleared its 2-year hold on 2026-03-29. Eligible for vanity application.

Last held by Silva, Frank A (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

NN1Nactive· E
Silva, Frank AFLgranted 2024-03-29

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

K4CYG 2026-09-10
K4YDD 2026-09-10
KG4QXI 2026-09-10
KG4RVV 2026-09-10
KG4VAB 2026-09-10

Starting with KK4

All →

KK4LMT KY · 2026-09-10
KK4LMV FL · 2026-09-10
KK4LMX VA · 2026-09-10
KK4LMZ FL · 2026-09-10
KK4LNB NC · 2026-09-10

Full history → Vanity availability → Callsign genealogy →