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

K4NNX

Active

Humelsine, James B

Location: Islamorada, FL
Class: Amateur Extra
Granted: 2026-05-27
Expires: 2036-08-08
Previous call: NL7AU
FRN: 0008592917

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Vanity availability

Held

Currently held

K4NNX 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

NL7AUactive· E
Humelsine, John BAKgranted 2026-07-10
WA4BUDcancelled· E
Humelsine, John BAKgranted 2026-06-23cancelled 2026-07-10
KI4QQScancelled· T
Humelsine, John BFLgranted 2006-08-18cancelled 2006-09-06

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 K4

All →

K4CYG FL · 2026-09-10
K4LWW NC · 2026-09-10
K4ONS NC · 2026-09-10
K4YDD FL · 2026-09-10
K4KLP TN · 2026-09-13

Full history → Vanity availability → Callsign genealogy →