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

KN4SEJ

Cancelled

Hartnett, James R

Location: Jupiter, FL
Class: Amateur Extra
Granted: 2017-12-12
Expires: 2027-12-12
Previous call: KN4IHS
FRN: 0027071091

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Vanity availability

436d

Available on 2027-11-20

KN4SEJ cancelled on 2025-11-20. Hold ends in 436 days.

Last held by Hartnett, James R (FL).

Confidence: High

Cancelled licenses begin the 2-year hold immediately on the cancellation date, so this is the firm release date per §97.19.

Callsign genealogy

Previously held by current licensee

KN4IHScancelled· G
Hartnett, James RFLgranted 2017-12-12cancelled 2019-02-08

Prior holders later became

KZ4XLactive· E
Hartnett, James RNCgranted 2017-12-12

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

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

Starting with KN4

KN4ZVG FL · 2026-09-17
KN4LGK GA · 2026-09-21
KN4VXC NC · 2026-09-21
KN4RPM VA · 2026-10-07
KN4GAM GA · 2026-10-12

Full history → Vanity availability → Callsign genealogy →