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

KF4BS

Active

Sublett, Benjamin J

Location: Huntsville, AL
Class: Amateur Extra
Granted: 2022-03-04
Expires: 2032-03-04
Previous call: KO4SFJ
FRN: 0030806152

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Vanity availability

Held

Currently held

KF4BS 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

KO4SFJcancelled· E
Sublett, Benjamin JALgranted 2021-07-27cancelled 2022-03-04

Prior holders later became

AG4ODexpired· E
Mallow, Louis EFLgranted 2014-02-20cancelled 2026-05-19

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 KF4

All →

KF4WUR VA · 2026-10-01
KF4BCO FL · 2026-10-09
KF4WLA FL · 2026-10-11
KF4QOP KY · 2026-11-16
KF4TYA FL · 2026-11-22

Full history → Vanity availability → Callsign genealogy →