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

KB3MHR

Active

Ruback, Mitchell H

Location: SHINGLE HOUSE, PA
Class: Technician
Granted: 2017-08-03
Expires: 2027-10-30
Previous call: KB3PUJ
FRN: 0016988230

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Vanity availability

Held

Currently held

KB3MHR 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

KB3PUJcancelled· T
Ruback, Mitchell HPAgranted 2007-10-04cancelled 2007-10-30

Prior holders later became

W3NIHactive
National Institutes Of Health Radio Amateur ClubMDgranted 2025-05-07

License history

0 events

No recorded events.

More vanity slots coming available

From Pennsylvania

All →

KB3QHC 2026-09-09
N3NFG 2026-09-09
KB3HBB 2026-09-10
KB3ZFA 2026-09-10
KB3ZFB 2026-09-10

Starting with KB3

All →

KB3INT MD · 2026-09-09
KB3INX AK · 2026-09-09
KB3QHC PA · 2026-09-09
KB3ZEV VA · 2026-09-09
KB3HBB PA · 2026-09-10

Full history → Vanity availability → Callsign genealogy →