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

K4SX

Active

LOWRANCE, RONALD D

Location: WRIGHT CITY, MO
Class: Amateur Extra
Granted: 2026-09-03
Expires: 2036-11-04
Previous call: NE4S
FRN: 0002280980

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

Vanity availability

Held

Currently held

K4SX 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

NE4Sactive· E
CONDON, MICHAEL RGAgranted 2018-09-11
K9EGAactive· T
Condon, Joan MGAgranted 2022-01-13
KG4PYQcancelled· T
Condon, Joan MGAgranted 2001-11-05cancelled 2002-03-07

License history

0 events

No recorded events.

More vanity slots coming available

From Missouri

All →

KD0TBI 2026-09-11
KD0TBJ 2026-09-11
KD0TBK 2026-09-11
KD0TBL 2026-09-11
KD0TBM 2026-09-11

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 →