Confidence: Medium · Source: FCC ULS · As of 2026-09-10

K0ARO

Active

RENNER, WALTER K

Location: MASON CITY, IA
Class: Amateur Extra
Granted: 2016-10-03
Expires: 2026-12-03
Previous call: KT0L
FRN: 0015471667

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Vanity availability

Held

Currently held

K0ARO 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

KT0Lactive· E
KARCH, RICHARD ACOgranted 2020-11-20
N0KZJcancelled· E
KARCH, RICHARD ACOgranted 2000-07-22cancelled 2001-02-06

License history

0 events

No recorded events.

More vanity slots coming available

From Iowa

All →

N5SJU 2026-09-11
KD0TCI 2026-09-13
KD0TCZ 2026-09-18
KD0TDT 2026-09-20
KC0ODH 2026-09-24

Starting with K0

All →

K0WFI KS · 2026-09-10
K0KDD KS · 2026-09-17
K0BHM KS · 2026-09-20
K0DO MO · 2026-10-09
K0EHN MN · 2026-10-12

Full history → Vanity availability → Callsign genealogy →