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

KB4FS

Active

Slintak, Frantisek

Location: Cape Coral, FL
Class: Amateur Extra
Granted: 2021-07-29
Expires: 2031-09-11
Previous call: AG4CQ
FRN: 0003963063

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Vanity availability

Held

Currently held

KB4FS is held by an active license; it isn't a vanity slot right now.

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).

Callsign genealogy

Full chain →

Previously held by current licensee

AG4CQactive· E
ROLON, HIRAM DFLgranted 2026-07-14
KC2GACcancelled· E
ROLON, HIRAM DFLgranted 2000-03-03cancelled 2006-04-28

Prior holders later became

KM6MEexpired· A
STERN, ALBERT ACAgranted 2001-08-22cancelled 2013-11-20

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

K4HCL 2026-09-09
KG4UZU 2026-09-09
KG4UZX 2026-09-09
KK4LMR 2026-09-09
W3EFZ 2026-09-09

Starting with KB4

All →

KB4IIB TN · 2026-09-14
KB4CON KY · 2026-09-21
KB4OXL IL · 2026-10-02
KB4CO TN · 2026-10-04
KB4XQ AL · 2026-10-05

Full history → Vanity availability → Callsign genealogy →