Confidence: Medium · Source: FCC ULS · As of 2026-09-14

KR4SX

Expired

Applegate, Boyd E

Location: HERNANDO BEACH, FL
Class: Advanced
Granted: 2004-03-10
Expires: 2014-05-31
Previous call: KD4ZKZ
FRN: 0005125406

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Vanity availability

Available

Available now

KR4SX cleared its 2-year hold on 2018-05-30. Eligible for vanity application.

Last held by Applegate, Boyd E (FL).

Confidence: High

Expired licenses get a 2-year FCC renewal grace period followed by the 2-year hold. The date shown accounts for both, so it's the firm release date per §97.19.

Callsign genealogy

Full chain →

Previously held by current licensee

KD4ZKZ
no FCC ULS record on file

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

KD7SRB 2026-09-15
K4THL 2026-09-16
KB3IOF 2026-09-16
KD4DMX 2026-09-16
KG4VCX 2026-09-16

Starting with KR4

All →

KR4AAB AL · 2027-01-11
KR4ABQ FL · 2027-01-17
KR4BBR FL · 2027-01-17
KR4ACS VA · 2027-01-18
KR4ADZ FL · 2027-01-22

Full history → Vanity availability → Callsign genealogy →