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

K4ST

Active

ENDO, KIYOSHI

Location: San Jacinto, CA
Class: Amateur Extra
Granted: 2019-02-15
Expires: 2029-04-09
Previous call: W3XJ
FRN: 0001799113

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Vanity availability

Held

Currently held

K4ST 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

W3XJactive· E
Jones Jr, William RMDgranted 2021-04-20
N3EGOcancelled· E
Jones Jr, William RMDgranted 1995-03-08cancelled 2001-05-01

License history

0 events

No recorded events.

More vanity slots coming available

From California

All →

KC6OZS 2026-09-09
KD6MWG 2026-09-09
KG6NDR 2026-09-09
KG6NDX 2026-09-09
KG6NEF 2026-09-09

Starting with K4

All →

K4HCL FL · 2026-09-09
K4CYG FL · 2026-09-10
K4LWW NC · 2026-09-10
K4ONS NC · 2026-09-10
K4YDD FL · 2026-09-10

Full history → Vanity availability → Callsign genealogy →