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

KZ4US

Active

MCDERMOTT, SKYLAR A

Location: KNOXVILLE, TN
Class: Amateur Extra
Granted: 2026-08-29
Expires: 2036-11-21
Previous call: KM4ZCC
FRN: 0026053371

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

Vanity availability

Held

Currently held

KZ4US 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

KM4ZCCcancelled· E
MCDERMOTT, SKYLAR ATNgranted 2016-11-21cancelled 2025-07-10

License history

3 events

Renewed 2026-08-29

LIREN
[LIREN]
License granted 2025-07-10

LIISS
[LIISS]
Systematic grant 2025-07-10

SYSGRT
[SYSGRT]

More vanity slots coming available

From Tennessee

All →

KG4TWC 2026-09-10
KK4LNE 2026-09-10
KK4LNK 2026-09-10
KQ4TPH 2026-09-10
KQ4UUA 2026-09-10

Starting with KZ4

All →

KZ4KE FL · 2026-09-10
KZ4KU AL · 2026-09-10
KZ4FM KY · 2026-09-21
KZ4JU NC · 2026-09-24
KZ4LG GA · 2026-09-28

Full history → Vanity availability → Callsign genealogy →