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

KB4DFO

Cancelled

MARX, ROLF P

Location: OCALA, FL
Class: Amateur Extra
Granted: 1997-08-20
Expires: 2007-08-20
FRN: 0003149705

Get notified about status changes and vanity availability for this callsign.

Vanity availability

Available

Available now

KB4DFO cleared its 2-year hold on 2002-05-30. Eligible for vanity application.

Last held by MARX, ROLF P (FL).

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

K1YVactive· E
MARX, ROLF PTNgranted 2020-03-04

License history

0 events

No recorded events.

More vanity slots coming available

From Florida

All →

K4CYG 2026-09-10
K4YDD 2026-09-10
KG4QXI 2026-09-10
KG4RVV 2026-09-10
KG4VAB 2026-09-10

Starting with KB4

All →

KB4IIB TN · 2026-09-14
KB4CON KY · 2026-09-21
KB4OXL IL · 2026-10-02
KB4CO TN · 2026-10-04
KB4XQ AL · 2026-10-05

Full history → Vanity availability → Callsign genealogy →