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

KC1MDP

Cancelled

Riordan, Peter S

Location: Darien, CT
Class: Technician
Granted: 2019-11-08
Expires: 2029-11-08
FRN: 0019240019

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Vanity availability

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KC1MDP cleared its 2-year hold on 2021-11-25. Eligible for vanity application.

Last held by Riordan, Peter S (CT).

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

W1PSRactive· T
Riordan, Peter SCTgranted 2019-11-26

License history

0 events

No recorded events.

More vanity slots coming available

From Connecticut

All →

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Starting with KC1

All →

KC1SDV MA · 2026-09-10
KC1VGT CT · 2026-09-10
KC1UNR NH · 2026-09-13
KC1VEC ME · 2026-09-17
KC1VEL CT · 2026-09-17

Full history → Vanity availability → Callsign genealogy →