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

KI4SX

Active

COOK, JERRY W

Location: JACKSONVILLE, AL
Class: Amateur Extra
Granted: 2026-02-11
Expires: 2036-03-01
Previous call: K4CKY
FRN: 0002572402

Get notified about status changes and vanity availability for this callsign.

Vanity availability

Held

Currently held

KI4SX 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

K4CKYactive· G
Stanley, Willard RKYgranted 2026-01-17
KK4PQUcancelled· G
Stanley, Willard RKYgranted 2023-01-12cancelled 2026-01-17

Prior holders later became

K4CKYcancelled· A
COOK, JERRY WALgranted 2010-02-27cancelled 2016-03-01

License history

0 events

No recorded events.

More vanity slots coming available

From Alabama

All →

KG4SUF 2026-09-10
KQ4TEB 2026-09-10
KQ4UQY 2026-09-10
KQ4UVF 2026-09-10
KZ4KU 2026-09-10

Starting with KI4

All →

KI4ZDD TN · 2026-09-13
KI4TV TN · 2026-09-28
KI4HEY FL · 2026-10-08
KI4CUF FL · 2026-10-12
KI4IMK UT · 2026-11-16

Full history → Vanity availability → Callsign genealogy →