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

KC3AVO

Cancelled

Helmke, Martin F

Location: West Chester, PA
Class: Amateur Extra
Granted: 2013-06-26
Expires: 2023-06-26
FRN: 0022760227

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Vanity availability

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Available now

KC3AVO cleared its 2-year hold on 2015-08-28. Eligible for vanity application.

Last held by Helmke, Martin F (PA).

Confidence: High

Cancelled licenses begin the 2-year hold immediately, so this date is the firm release date per §97.19. Already past — fileable subject to FCC verification.

Callsign genealogy

Full chain →

Prior holders later became

AB3TAcancelled· E
Helmke, Martin FPAgranted 2013-06-26cancelled 2015-02-07

License history

0 events

No recorded events.

More vanity slots coming available

From Pennsylvania

All →

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KC3ZQJ 2026-09-10

Starting with KC3

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KC3WYD PA · 2026-09-13
KC3ZPN MD · 2026-09-13

Full history → Vanity availability → Callsign genealogy →