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

KR4HYR

Cancelled

Grinwis, John E

Location: PALM BAY, FL
Class: Technician
Granted: 2025-12-04
Expires: 2035-12-04
FRN: 0037648284

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Vanity availability

708d

Available on 2028-08-20

KR4HYR cancelled on 2026-08-21. Hold ends in 708 days.

Last held by Grinwis, John E (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

KR4KKKactive· T
Grinwis, John EFLgranted 2026-08-21

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

KB1HYE 2026-09-12
KO4UTL 2026-09-13
KQ4RHZ 2026-09-13
KQ4UWU 2026-09-13
KQ4UXF 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 →