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

KB3YRT

Cancelled

Zweifel, Michael J

Location: Coopersburg, PA
Class: Technician
Granted: 2012-05-08
Expires: 2022-05-08
FRN: 0021134093

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Vanity availability

Available

Available now

KB3YRT cleared its 2-year hold on 2014-07-06. Eligible for vanity application.

Last held by Zweifel, Michael J (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

KB3MJZactive· T
Zweifel, Michael JPAgranted 2022-05-20

License history

0 events

No recorded events.

More vanity slots coming available

From Pennsylvania

All →

KB3HBB 2026-09-10
KB3ZFA 2026-09-10
KB3ZFB 2026-09-10
KC3ZNR 2026-09-10
KC3ZQJ 2026-09-10

Starting with KB3

All →

KB3HBB PA · 2026-09-10
KB3ZFA PA · 2026-09-10
KB3ZFB PA · 2026-09-10
KB3ZFD PA · 2026-09-11
KB3ZFE PA · 2026-09-13

Full history → Vanity availability → Callsign genealogy →