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Confidence: Medium · Source: FCC ULS · As of 2026-09-11

KR4CTB

Cancelled

Simpson, William H

Location: Jacksonville, FL
Class: Technician
Granted: 2025-04-01
Expires: 2035-04-01
FRN: 0036027357

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Vanity availability

220d

Available on 2027-04-19

KR4CTB cancelled on 2025-04-19. Hold ends in 220 days.

Last held by Simpson, William H (FL).

Confidence: High

Cancelled licenses begin the 2-year hold immediately on the cancellation date, so this is the firm release date per §97.19.

Callsign genealogy

Prior holders later became

K4YJAactive· T
Simpson JR, William HFLgranted 2025-04-19

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

KD4SPY 2026-09-11
KK4LOA 2026-09-11
KB1HYE 2026-09-12
KO4UTL 2026-09-13
KQ4RHZ 2026-09-13

Starting with KR4

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 →